Definition of "Bird" :

noun: warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings

noun: badminton equipment consisting of a ball of cork or rubber with a crown of feathers

noun: a cry or noise made to express displeasure or contempt

noun: the flesh of a bird or fowl (wild or domestic) used as food

noun: informal terms for a (young) woman

verb: watch and study birds in their natural habitat