Crazy; not sane.
To make the call of a cuckoo.
To repeat something incessantly.
The cuckoo clock itself.
The sound of that particular bird.
A person who inveigles themselves into a place where they should not be (used especially in the phrase a cuckoo in the nest).
Someone who is crazy.
Any of various birds, of the family Cuculidae, famous for laying its eggs in the nests of other species; but especially a common cuckoo (Cuculus canorus), that has a characteristic two-note call.
The bird-shaped figure found in cuckoo clocks.
Relating to the representation of objects, actions or conditions as they actually are or were.
Expressed or represented as being accurate, practicable, or not idealistic.