cuckoo
noun [ C ] uk/ˈkʊk.uː/ us/ˈkʊk.uː/ cuckoos
杜鹃（鸟），布谷鸟
a grey bird with a two-note call that sounds similar to its name. Cuckoos lay their eggs in other birds' nests.
cuckoo
adjective informal uk/ˈkʊk.uː/ us/ˈkʊk.uː/
愚蠢的，傻的
silly or crazy