cuckoo
adjective
°Crazy; not sane.
noun
°Any of various birds, of the family Cuculidae (from Latin cuculus 'cuckoo'), famous for laying its eggs in the nests of other species; but especially the Common Cuckoo, Cuculus canorus, that has a characteristic two-note call.
°The sound of that particular bird.
verb
°To make the call of a cuckoo.
°To repeat something incessantly.