A structure built by a bird as a place to incubate eggs and rear young. / Any of several plants having some resemblance to the typical nest of a bird, eg, wild carrot (Dauca carota)

Alternative form of birdnest

flighty; incapable of sustained attention

hornbill

regent bowerbird (Sericulus chrysocephalus)

(obsolete) A tramp who does not go to lodging-houses; a rough sleeper.

Alternative form of umbrellabird

(humorous, folklore) A fictional bird said to fly backwards or in circles.

Used other than figuratively or idiomatically: see canary, bird. / (slang) A jailbird. / (slang) A mistress.

plural of bird-nest