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Definition cuckoo in British English

cuckoo noun

[countable] noun
/ˈkʊkuː/
1

a grey bird that leaves its eggs in other birds' nests and makes a loud call that sounds like its name

Synonyms and related words
2

the sound made by a cuckoo

Synonyms and related words
3

an unwelcome person or a thing

Example

In a time of austerity, using taxpayers' money on the project is a cuckoo in the nest.

Definition cuckoo in British English