1. Male peafowl; having a crested head and very large fanlike tail marked with iridescent eyes or spots
   "The peacock displayed its magnificent tail feathers"
    
2. European butterfly having reddish-brown wings each marked with a purple eyespot
   "The peacock butterfly's eyespots startled potential predators";
   - peacock butterfly, Inachis io

1. Display oneself ostentatiously; show off in a showy or vain manner
   "He peacocked around the party in his flashy new suit"

Derived forms: peacocked, peacocks, peacocking

Type of: bird of Juno, brush-footed butterfly, four-footed butterfly, nymphalid, nymphalid butterfly, peafowl

Part of: genus Inachis, Inachis

Encyclopedia: Peacock, Mike