wanker

Etymology 1

From wank + -er.

noun

1. (slang, derogatory, vulgar) A person who wanks.
2. (slang, derogatory, vulgar) An idiot, a stupid person.
3. (slang, derogatory, vulgar) An annoying person.
4. (slang, derogatory, vulgar) An ineffectual person.
5. (slang, derogatory, vulgar) Someone who shows off too much, a poser or poseur; someone who is overly self-satisfied.
6. (slang, derogatory, vulgar) A penis.
   He walked closer to the trees and then pulled out his wanker and took a piss. While he was watering a clump of grass he called out calmly to the men in the trees, "We've come in peace to recruit men for our companies of dragoons." 2019-04-16, Skye Smith, The Pistoleer - Lyme 1644: Novel Nine of the Series by Skye Smith, Skye Smith
7. (slang, humorous, vulgar) A very informal address used between friends.

Etymology 2

UK 1890s. From stwanker, from stinker. Used at Felsted School, Essex.

noun

1. (obsolete, Britain, school slang) A salted, and lightly smoked herring or mackerel; a bloater.
   My name it is "wanker"; a leaner or lanker, Salter or ranker, fish never swam. 1892 October, The Felstedian, page 105
   He sniffs. "'Eugh, wankers again." 1897 June, The Felstedian, page 100