Etymology tree
Biblical Hebrew עָקַב
Biblical Hebrew יַעֲקֹב (yaʿăqōḇ)bor.
Ancient Greek Ἰακώβ (Iakṓb)
Ancient Greek Ἰάκωβος (Iákōbos)bor.
Latin Iācōbusslbor.?
French Jacquesder.
Middle English Jackin
English Jack
English Jock
English jock
From Jock, a Scottish hypocoristic form of John (compare Jack).
The computer slang meanings are derived from jockey. The athletic slang meanings in turn date from the mid-20th century and are simple abbreviations of jockstrap.
Meanings
(informal) A jockey.
"You've heard of him?" "No." "Why, young fellah, where have you lived? Sir John Ballinger is the best gentleman jock in the north country." 1912, Arthur Conan Doyle, The Lost World […], London; New York, N.Y.: Hodder and Stoughton, →OCLC:
(dated, rare, slang) The penis.
An athletic supporter worn by men to support the genitals especially during sports.
(US, slang) A young male athlete, typically tall and aged 16–23.
(US, derogatory, slang) An enthusiastic sports fan, especially one with few other interests, often stereotyped as slow-witted person of large size and great physical strength.
'Cause all jocks ever think about is sports, all we ever think about is sex. 1984, Steve Zacharias, Jeff Buhai (screenplay), Revenge of the Nerds (motion picture), spoken by Lewis (Robert Carradine):
(slang) A disc jockey.
As a teenager, I laid down the sword and decided I wanted to be a disc jockey. […] I'd sit outside the studio and watch with envy and admiration as the jocks performed in the small room on the other side of the soundproof window […] 2010, Stephen B. McSwain, The Enoch Factor: The Sacred Art of Knowing God, page 95:
There was never a single listener protest or objection — the entire opposition to the content of the program came from a few jocks within the station. 1977 April 16, "Hartford Radio Show Axed", in Gay Community News, page 6, quoting Eric Gordon
(US, dated, in-compounds, slang) A specialist computer programmer.
Thear's boan-idle nowbles, baht hahses an' lands, 'at al walk on a carpeted path, an' nivver do nowt wi' ther lily-white hands bud lift uther fowk's jock to ther maath. 1881, Ben Preston, Dialect and Other Poems, page 19:
Hah's a growing lad to thrive baht jock? 1884, William Cudworth (of Bradford), Yorkshire Dialect and Character Sketches, page 15:
Deriveds
jock sniffer (terms derived from all etymologies (should be sorted)) · jock itch (terms derived from all etymologies (should be sorted)) · bubbly-jock (terms derived from all etymologies (should be sorted)) · rocks for jocks (terms derived from all etymologies (should be sorted)) · rock jock (terms derived from all etymologies (should be sorted)) · radio jock (terms derived from all etymologies (should be sorted)) · shock jock (terms derived from all etymologies (should be sorted)) · bubbley-jock (terms derived from all etymologies (should be sorted)) · jock strap (terms derived from all etymologies (should be sorted)) · jock off (terms derived from all etymologies (should be sorted)) · talk jock (terms derived from all etymologies (should be sorted))