PEACOCK Meaning of PEACOCK in English ■ noun a male peafowl, having very long tail feathers with eye-like markings that can be erected and fanned out in display.OriginME: from OE pēa (from L. pavo ) '~' + cock 1 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004