peacock UK /ˈpiːkɒk/US /ˈpikɑk/noun 5verb 2forms 3phrases 1 noun5 •A male peafowl, especially Pavo cristatus, notable for its brilliant iridescently ocellated tail. •A peafowl (of the genus Pavo or Afropavo), either male or female. •A pompous or vainglorious person [from the 14th c.]. •The meat of this bird.When a reader recently inquired if people really eat peacock, I stated that I’d never tasted the bird, roasted or otherwise, and as far as I knew, it is rarely cooked anywhere in the world. — 1979 •Any of various Asian species of papilionid butterflies of the genus Papilio. verb2 •To strut about proudly or haughtily. •To engage in peacocking, ostentatious dress or behaviour to impress women. formspeacocked · peacocking · peacocks Phrases with peacock proud as a peacockExtremely proud.