COCKY Meaning of COCKY in English 1. adj. (cockier, cockiest) 1. conceited, arrogant. 2 saucy, impudent. Derivatives: cockily adv. cockiness n. Etymology: COCK(1) + -Y(1) 2. n. (pl. -ies) Austral. & NZ colloq. COCKATOO 2. Etymology: abbr. Oxford English vocab. Оксфордский английский словарь. 2012