/ dʒɒk; NAmE dʒɑːk/ noun
1.
( NAmE ) a man or boy who plays a lot of sport
2.
( NAmE ) a person who likes a particular activity :
a computer jock
3.
= disc jockey
—compare shock jock
For more information see the Cultural Guide
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WORD ORIGIN
senses 2 to 3 late 18th cent. (denoting a rider in horse races): abbreviation.