English
wank
Origin unknown.
first attested First known use as a verb is 1905, as a noun 1948 (as stated in the etymology)
The story
First known use as a verb is 1905, as a noun 1948. Perhaps compare regional slang term wang, whang (‘to whack or beat’).
Today it means
verb To masturbate.
Language periods are conventional ranges, not dates for this word.
Etymograph / wank