名詞 cuckoo:

1. a man who is a stupid incompetent fool
   同義詞：fathead, goof, goofball, bozo, jackass, goose, twat, zany
2. any of numerous European and North American birds having pointed wings and a long tail

動詞 cuckoo:

1. repeat monotonously, like a cuckoo repeats his call

1. The cuckoo lays its eggs in other birds' nests.
   杜鵑在別的鳥巢中產卵。
2. In England the cuckoo is the herald of spring.
   在英國杜鵑鳥是報春的使者。
3. The cuckoo is a harbinger of spring.
   布谷鳥預告春天的來臨。
4. The cuckoo is the herald of the spring.
   杜鵑報春。

cuck.oo

n.（名詞）
【復數】 cuck.oos

A grayish European bird(Cuculus canorus) that has a characteristic two-note call and lays its eggs in the nests of birds of other species.
杜鵑：一種產于歐洲的淺灰色鳥（杜鵑屬 大杜鵑） ，其特征是能發(fā)出雙音節(jié)的叫聲并把蛋產于其它種類的鳥巢中
Any of various related birds of the family Cuculidae, having grayish-brown plumage and a slender body.
杜鵑屬鳥：任一種杜鵑科的相關鳥類，生有灰褐色的羽毛和小巧的身體
The call or cry of one of these birds.
杜鵑叫聲：這些鳥之一的叫喊聲
Slang A foolish or crazy person.
【俚語】 傻子，瘋子
v.tr.（及物動詞）
cuck.ooed,cuck.oo.ing,cuck.oos
To repeat incessantly, as a cuckoo does its call.
咕咕叫，學杜鵑叫：象杜鵑叫一樣不停地重復
adj.Slang （形容詞）【俚語】
Lacking in sense; foolish or crazy.
缺乏理智的；愚蠢的，瘋狂的

來源：
Middle English cuccu
中古英語 cuccu
[of imitative origin]
[源于象聲詞]