Online Etymology Dictionary

Tabitha: fem. proper name, from Late Latin, from Greek Tabitha, from Aramaic tabhyetha, emphatic of tabhya "gazelle," which is related to Hebrew tzebhi (fem. tzebhiyyah), Arabic zaby.
teonanacatl (n.): native name for a hallucinogenic fungi (Psilocybe mexicana) found in Central America, 1875, from Nahuatl (Aztecan), from teotl "god" + nancatl "mushroom."
Shavian (adj.): 1903, "in the style or manner of George Bernard Shaw" (1856-1950), from Latinized form of his name. An earlier form was Shawian (1894).
Smith & Wesson: proprietary name of a type of firearm, 1860, from the gunsmith firm of Horace Smith (1808-1893) and Daniel B. Wesson (1825-1906) in Springfield, Massachusetts.
Camilla: fem. proper name, from Latin, fem. of Camillus, cognomen of several members of the gens Furia, from camillus "noble youth attending at sacrifices," perhaps from Etruscan.
STP (n.): commercial motor oil additive, probably an initialism (acronym) of scientifically treated petroleum. As the street name of a type of psychedelic drug, attested from 1967.
Struwwelpeter (n.): German, name of a character in the children's book by Heinrich Hoffman (1809-1894). There was an English edition by 1848.
Thetis: name of a sea goddess in Greek mythology, mother of Achilles by Peleus. Since Roman times, sometimes, in poetry, "the sea personified."
Timon (n.): "misanthrope," from Timon, name of a misanthrope who lived in Athens during the Peloponnesian War (431-404 B.C.E.), hero of Shakespeare's "Timon of Athens" (c. 1605).
Tobias: masc. proper name, from Late Latin Tobias, from Greek Tobias, from Hebrew Tobhiyyah, literally "the Lord is my Good," from Hebrew tobh "good." Toby is a short form.
Zachariah: masc. proper name, Late Latin Zacharias, from Greek Zakharias, from Hebrew Zekharyahu, literally "the Lord has remembered," from zakhar "he remembered."
Zacchaeus: masc. proper name, from Late Latin Zacchaeus, from Greek Zakkhaios, from Hebrew zakkay, literally "pure, innocent," from zakhah "was clean, was pure."
Zebulon: masc. proper name, Biblical son of Jacob by Leah, from Hebrew Zebhulun, from zebhul "a dwelling" + diminutive suffix -on (see Gen. xxx:20).
Wehrmacht (n.): "the armed forces of Germany," 1935, from German Wehrmacht (name of the armed forces 1921-1945), from Wehr "defense" (see weir) + Macht "might" (see might (n.)).
ultraviolet (adj.): "beyond the violet end of the visible spectrum," 1840, from ultra- + violet. Ultra-red (1870) was a former name for what now is called infra-red.
Virgo: zodiacal constellation, c. 1000, from Latin constellation name Virgo "the virgin" (see virgin). Meaning "person born under the sign of Virgo" is attested from 1917.
Tijuana: from the name of a Diegueño (Yuman) village, written Tiajuan in 1829; deformed by folk-etymology association with Spanish Tia Juana "Aunt Jane."
Yosemite: from Southern Sierra Miwok /yohhe'meti/ "they are killers." "[E]vidently a name given to the Indians of the valley by those outside it." [Bright]
Guadalcanal: largest of the Solomon Islands, discovered 1568 by Spanish explorer Álvaro de Mendaña de Neira and named for his hometown in Spain. The place name contains the Spanish form of Arabic wadi "river" which occurs in other Spanish place names (such as Guadalajara, from Arabic Wadi Al-Bajara "River of the Stones," either a parallel formation to or ultimately a translation of the ancient Iberian name for the river that gave the place its earlier name, based on caruca "stony;" Guadalquivir, from Arabic Al-Wadi Al-Kabir "Big River;" and Guadalupe, from the Arabic river word and the Roman name of the river, Lupus, literally "wolf").
Athena: Greek goddess of wisdom, skill in the arts, warfare, etc., from Latin Athena, from Greek Athene, perhaps from a name in a lost pre-Hellenic language.
arnica (n.): plant genus of the borage family, 1753, Modern Latin, of unknown origin. Klein suggests Arabic arnabiyah, a name of a type of plant, as the ultimate source.
Annie: diminutive of fem. proper name Ann or Anne (see Anna). Annie Oakley (1860-1926) was the famous rifle markswoman.
Saul: masc. proper name, Biblical first king of Israel, from Latin Saul, from Hebrew Shaul, literally "asked for," passive participle of sha'al "he asked for."
Stetson: 1902, trademark name, from John B. Stetson (1830-1906), U.S. hat manufacturer, who started his company in Philadelphia in 1865.
saguaro (n.): type of large branching columnar cactus of the North American desert, 1856, from Mexican Spanish, from a native name of unknown origin, perhaps from Yaqui (Sonoran).
Swahili: name of a Bantu people inhabiting the coast of southeastern Africa, 1814, literally "coast-dwellers," from Arabic sawahil, plural of sahil "coast" + ethnic suffix -i.
Swedenborgian: 1791, from name of Emanuel Svedberg, Swedish mystic and religious philosopher (1668-1772). His followers organized 1788 as The New Church.
Cossack (n.): 1590s, from Russian kozak, from Turkish kazak "adventurer, guerilla, nomad," from qaz "to wander." The same Turkic root is the source of the people-name Kazakh and the nation of Kazakhstan.
Sextus: masc. proper name, from Latin, properly "the sixth," originally denoting a sixth child, from sextus "sixth," from sex "six" (see six; also see Octavian).
scuppernong (n.): cultivated muscadine grape vine, 1811, from name of a river in North Carolina, U.S., recorded 18c. as Cascoponung, Cuscopang, from an unidentified American Indian word.
Calais: city on the French coast of the English Channel, from Gaulish Caleti, the name of a Celtic people who once lived along the shore there.
Botox: a commercial name for botulinum toxin, and composed of elements from those words, approved in U.S. as a temporary cosmetic injection in 2002.
Broadway: common street name, from broad (adj.) + way (n.); the allusive use for "New York theater district" is first recorded 1881.
bromeliad (n.): from Modern Latin Bromeliaceæ, family name given by Linnæus, for Olaus Bromel (1639-1705), Swedish botanist. Related: Bromeliads.
Boeing: U.S. aerospace corporation, founded 1916 by William E. Boeing in Seattle, Washington, as an airplane manufacturer. The family name is German.
time-out (n.): also time out, 1896 in sports, 1939 in other occupations; from 1980 as the name of a strategy in child discipline; from time + out.
Fay: fem. proper name, in some cases from Middle English fei, Old French fei "faith," or else from fay "fairy."
MapQuest: Internet mapping service, known by that name from 1996; acquired by AOL in 2000. As a verb, by 1997.
Khmer: 1867, native name. Khmer Rouge, communist party of Cambodia, literally "Red Khmer," is with French rouge (see rouge (n.)).
Sheetrock (n.): 1921, proprietary name (claiming use from 1917) of a type of plaster wall-board, U.S. Gypsum Co., Chicago, Ill.; from sheet (n.1) + rock (n.).
griffon (n.): alternative spelling in certain senses of griffin. Also a name given to the Byzantine Greeks, perhaps suggested by some of the collateral forms of Greek.
Gustavus: masc. proper name, Latinized form of Swedish Gustaf; first element of unknown origin, second element literally "staff." Related: Gustavian.
prednisone (n.): 1955, probably from elements of pregnadiene (from pregnane, name of the compound from which pregnancy hormones were derived, from the Latin stem of pregnancy) + ending from cortisone.
Scheherezade: also Scheherazade, female narrator of the "Arabian Nights;" the name used by 1807 in reference to "(young, attractive, female) teller of long tales."
hot-foot (adv.): "hastily," c. 1300, from hot + foot (n.). As a verb in U.S. slang, from 1896. As the name of a prank played with matches, by 1934.
IBM: also (in early use) I.B.M., initialism (acronym) attested by 1921 from International Business Machines Co.; the company name in use from 1918.
hornbill (n.): 1773, from horn (n.) + bill (n.2). So called from the horny casques atop the bills. Another old name for it was horned pie.
Aspasia: beautiful and capable Milesian consort of Pericles, proper name from fem. of Greek aspasios "welcome," related to aspazesthai "to welcome," which is of uncertain origin.
Henrietta: fem. proper name, from French Henriette, fem. diminutive of Henri (see Henry). In late 19c. a type of light dress fabric.
meddlesome (adj.): 1610s, from meddle + -some (1). Earlier was medlous "quarrelsome, meddlesome" (mid-15c.). Related: Meddlesomely. Character name Meddlesome Mattie attested from 1814.