in physiology, "colorless fluid found in animal bodies," 1725, from French lymphe (16c.), from Latin lympha "water, clear water, a goddess of water," variant of lumpæ "waters," altered by influence of Greek nymphē "goddess of a spring, nymph."

The same word was used earlier in English in the classical sense "pure water, water" (1620s) and with reference to colorless fluids in plants (1670s). Also see lymphatic. Lymph node is attested by 1874.

1899, from lymphadeno- "pertaining to a lymph gland" (from lymph + Greek adēnos, genitive of adēn "gland") + -pathy. Lymphadenoma is from 1870.

cell found in the lymph, 1890, from lympho- "lymph" (see lymph) + -cyte "a cell."

plural lymphomata, 1867, from lympho- (see lymph) + -oma.

1835, "inflict severe (but not deliberately fatal) bodily punishment (on someone) without legal sanction," from earlier Lynch law (1811), in reference to such activity, which was likely named after William Lynch (1742-1820) of Pittsylvania, Virginia, who c. 1780 led a vigilance committee to keep order there during the Revolution. Other sources trace the name to Charles Lynch (1736-1796) a Virginia magistrate who fined and imprisoned Tories in his district c. 1782, but the connection to him is less likely. The surname is perhaps from Irish Loingseach "sailor."

It implies lawless concert or action among a number of members of the community, to supply the want of criminal justice or to anticipate its delays, or to inflict a penalty demanded by public opinion, though in defiance of the laws. [Century Dictionary, 1895]

Originally any sort of summary justice, done without authority of law, for a crime or public offense; it especially referred to flogging or tarring-and-feathering. At first the act was associated with frontier regions (as in the above citation), though from c. 1835 to the U.S. Civil War it also often was directed against abolitionists. The narrowing of the meaning to "extra-legal execution by hanging" is evident by the 1880s, and after c. 1893 lynching mostly meant killings of blacks by white mobs (especially in retaliation for alleged sexual assaults of white women). This shift in use seems due in part to the work of African-American journalist and activist Ida B. Wells. Lynch mob is attested from 1838. Compare earlier Lydford law, from a place in Dartmoor, England, "where was held a Stannaries Court of summary jurisdiction" [Weekley], hence:

Lydford law: is to hang men first, and indite them afterwards. [Thomas Blount, "Glossographia," 1656]

Also in a similar sense was Jedburgh justice (1706) and, as a verb, to Dewitt (1680s), a reference to two Dutch statesmen of that name, opponents of William of Orange, murdered by a mob in 1672. Related: Lynched; lynching. The city of Lynchburg, Virginia, dates to the 1750s when John Lynch, brother to Charles but a peaceable Quaker, had a ferry landing on the James River there.