Synonym: bozo, fathead, goof, goofball, goose, jackass, twat, zany. Similar words: beckon, pick off, pick out, kick off, reckon, back of, lock out, back out. Meaning: ['kʊkuː] 
n. 1. a man who is a stupid incompetent fool 2. any of numerous European and North American birds having pointed wings and a long tail. v. repeat monotonously, like a cuckoo repeats his call.
n. 1. a man who is a stupid incompetent fool 2. any of numerous European and North American birds having pointed wings and a long tail. v. repeat monotonously, like a cuckoo repeats his call. 
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31 Beside the portrait was a carved cuckoo clock with green ivy and purple grapes growing around a green front door.
32 As a result, a cuckoo who was himself brought up by warblers may father an egg found in a redstart nest.
33 The cuckoo continued calling in the far recesses of the wood undeterred by the surrounding stillness.
34 The cuckoo had to fly to a new nest, or perish.
35 This gives the cuckoo more time to find and watch a suitable nest.
36 Very occasionally the young cuckoo fails to remove its host's eggs and the young cuckoo and chicks are reared together.
37 There is one other bizarre adaptation used by the female cuckoo in laying her eggs.
38 The stuffed cuckoo is bombarded by a frenzied reed warbler and a belligerent pair of nightingales.
39 Opposite A pair of reed warblers work flat out to keep the young cuckoo satisfied.
40 In addition to certain species of cuckoo, there are about 30 species of birds worldwide that are also brood parasites.
41 Have you seen those cuckoo clocks which have little weathermen as part of the mechanism?
42 By looking like a super-offspring, the cuckoo successfully exploits the normal pattern of interaction that exists between parent and young.
43 In spite of his indifference, it was exquisite: the ditch banks were creamy with cowslips and lilac with cuckoo flower.
44 His detailed observations helped to dispel popular misconceptions about the habits and behaviour of the cuckoo.
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45 After about three weeks, the young cuckoo is ready to leave the nest.
46 You've cleared official sanction for Operation Cuckoo to go ahead.
47 A cuckoo flew low over the reed bed, to be mobbed at once by two reed warblers.
48 The first problem that faces the cuckoo is to find a nest belonging to the right species of host.
49 And the pressure of natural selection on the cuckoo is considerably greater than that on the host species.
50 Some ant cuckoo females make their presence felt in more dramatic fashion.
51 Sir Emmanuel asked Uncle Ned what it was and he said it was a young cuckoo.
52 Does anyone know the earliest date that a cuckoo has been heard?
53 This may sound cuckoo, but remember the rolling wheel thing.
54 Nobody, after all, writes to the newspapers about the last cuckoo of spring.
55 Only a little more indirect is the effect of the same cuckoo genes on the behaviour of the besotted host.
56 When the host leaves the nest, the cuckoo makes its approach in a long, silent hawk-like glide.
57 If, however, the host appears reluctant to leave the nest, the cuckoo has a more direct approach.
58 The willow warbler is even prepared to assault a stuffed cuckoo head.
59 Any cuckoo nestling that lost its hold, even momentarily, over its host would have died as a result.
60 The cuckoo is a herald of spring.