Cuck·oo n.  Zool. A bird belonging to Cuculus, Coccyzus, and several allied genera, of many species.
 Note: ☞ The European cuckoo (Cuculus canorus) builds no nest of its own, but lays its eggs in the nests of other birds, to be hatched by them.  The American yellow-billed cuckoo (Coccyzus Americanus) and the black-billed cuckoo (Coccyzus erythrophthalmus) build their own nests.
 Cuckoo clock, a clock so constructed that at the time for striking it gives forth sounds resembling the cry of the cuckoo.
 Cuckoo dove Zool., a long-tailed pigeon of the genus Macropygia.  Many species inhabit the East Indies.
 Cuckoo fish Zool., the European red gurnard (Trigla cuculus). The name probably alludes to the sound that it utters.
 Cuckoo falcon Zool., any falcon of the genus Baza.  The genus inhabits Africa and the East Indies.
 Cuckoo maid Zool., the wryneck; -- called also cuckoo mate.
 Cuckoo ray Zool., a British ray (Raia miraletus).
 Cuckoo spit, or Cuckoo spittle. (a) A frothy secretion found upon plants, exuded by the larvae of certain insects, for concealment; -- called also toad spittle and frog spit. (b) Zool. A small hemipterous insect, the larva of which, living on grass and the leaves of plants, exudes this secretion. The insects belong to Aphrophora, Helochara, and allied genera.
 Ground cuckoo, the chaparral cock.

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