cuckoo.
Any of various birds, of the family Cuculidae within the order Cuculiformes, 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.
Meaning & usage
Any of various birds, of the family Cuculidae within the order Cuculiformes, 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 sound of that particular bird.
The bird-shaped figure found in cuckoo clocks.
The cuckoo clock itself.
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.
Alternative form of coo-coo (Barbadian food).
Alternative form of ku ku jiao (the penis)
Where this word comes from
From Middle English cokkou, kokkow, cukkuk, gokkouȝ, probably from Old French cocu, coquu, cucu (whence French coucou); ultimately onomatopoeic of the song of the male Common Cuckoo (Cuculus canorus), perhaps via Latin cucūlus (“cuckoo”). Compare dialectal English gowkoo (“cuckoo”). Displaced Middle English gnokken (“cuckoo”) and native Middle English yeke, ȝek (from Old English ġēac (“cuckoo”)), see English gowk. The UK sense is by analogy from the bird's practice of brood parasitism. The Malaysian and Singaporean sense is a calque of Hokkien 咕咕鳥 /咕咕鸟 (ku-kú-chiáu)
To make the call of a cuckoo.
To repeat something incessantly.
To take over the home of a vulnerable person for the purposes of carrying out organized crime in a concealed way.
Where this word comes from
From Middle English cokkou, kokkow, cukkuk, gokkouȝ, probably from Old French cocu, coquu, cucu (whence French coucou); ultimately onomatopoeic of the song of the male Common Cuckoo (Cuculus canorus), perhaps via Latin cucūlus (“cuckoo”). Compare dialectal English gowkoo (“cuckoo”). Displaced Middle English gnokken (“cuckoo”) and native Middle English yeke, ȝek (from Old English ġēac (“cuckoo”)), see English gowk. The UK sense is by analogy from the bird's practice of brood parasitism. The Malaysian and Singaporean sense is a calque of Hokkien 咕咕鳥 /咕咕鸟 (ku-kú-chiáu)
Crazy; not sane.
I think I'm going cuckoo!
Where this word comes from
From Middle English cokkou, kokkow, cukkuk, gokkouȝ, probably from Old French cocu, coquu, cucu (whence French coucou); ultimately onomatopoeic of the song of the male Common Cuckoo (Cuculus canorus), perhaps via Latin cucūlus (“cuckoo”). Compare dialectal English gowkoo (“cuckoo”). Displaced Middle English gnokken (“cuckoo”) and native Middle English yeke, ȝek (from Old English ġēac (“cuckoo”)), see English gowk. The UK sense is by analogy from the bird's practice of brood parasitism. The Malaysian and Singaporean sense is a calque of Hokkien 咕咕鳥 /咕咕鸟 (ku-kú-chiáu)
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.