Someone who is crazy.
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).
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.
Crazy; not sane.
To make the call of a cuckoo.
To repeat something incessantly.
Someone or something that is remarkable or unusual.
A dilly bag.
Silly; characteristic of a dill.
Redolent of dill (the herb).