Definition of "jocks"

jocks¹

noun
1. plural of jock

jocks²

noun
plural only
1. (Australia, slang) Men's briefs.
  Quotations
  "Please, Ryan. I don't want to come downstairs every morning and find you lounging around in your jocks on my couch. It's too ... studenty."
  2015, Marian Keyes, The Woman Who Saved My Life: A Novel