scrimshaw (n.) Look up scrimshaw at Dictionary.com
1864, "A nautical word of unstable orthography" [Century Dictionary], back-formation from scrimshander ("Moby Dick," 1851), scrimshonting (1825), American English, of unknown origin. Scrimshaw is an English surname, attested from mid-12c., from Old French escremisseor "fencing-master."