To make the call of a cuckoo.
To repeat something incessantly.
Crazy; not sane.
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.
Able to be sensed by the senses or the psyche; able to be perceived.
Acting with or showing good sense; able to make good judgements based on reason, or reflecting such ability.
Characterized more by usefulness, practicality, or comfort than by attractiveness, formality, or fashionableness, especially of clothing.