cuckoo
/ˈkuku:; `kʊku/ n
migratory bird with a call that sounds like its name, that leaves its eggs in the nests of other birds 杜鹃; 布谷; 子规; 杜宇.
cuckoo / ˈkuku:; `kʊku/ adj [usu pred 通常作表语](infml 口) foolish; mad 愚蠢; 疯狂
He has gone absolutely cuckoo. 他简直疯了.