cocky

Short definition from Wiktionary

Adjective

1. 1
   Overly confident; arrogant and boastful.

Noun

1. 1
   Used as a term of endearment, originally for a person of either sex, but later primarily for a man.
2. 2
   A familiar name for a cockatoo.
3. 3
   Clipping of cockatoo farmer (“small-scale farmer”); (by extension) any farmer or owner of rural land.

Verb

1. 1
   To operate a small-scale farm.