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cuckoo-spit

[ koo-koo-spit, kook-oo- ]

noun

  1. Also called frog spit. a frothy secretion found on plants, exuded by the young of certain insects, as the froghoppers, and serving as a protective covering.
  2. an insect that produces this secretion.


cuckoo spit

noun

  1. a white frothy mass on the stems and leaves of many plants, produced by froghopper larvae ( cuckoo spit insects ) which feed on the plant juices Also calledfrog spit
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of cuckoo-spit1

1350–1400; Middle English cokkowespitle cuckoopint; so called from the spitlike secretion found on the plant and thought to be left by the bird
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Example Sentences

The young of many of these insects are green and soft-skinned, protecting themselves by the well-known frothy secretion that is called “cuckoo-spit.”

Cuckoo-spit.—The leaves of Willows, Meadow grasses and herbs, etc., are often seen with froth on them, in which is a green insect, Aphrophora, which sucks the juices from the tissues and excretes the frothy watery cuckoo-spit from its body.

I have frequently heard it called frog-spit, cuckoo-spit, toad-spit, and sheep-spit, and doubtless many other local terms of the same sort may be found.

CUCKOO-SPIT, a frothy secretion found upon plants, and produced by the immature nymphal stage of various plant-lice of the familiar Cercopidae and Jassidae, belonging to the homopterous division of the Hemiptera, which in the adult condition are sometimes called frog-hoppers.

So also does the so-called Cuckoo-spit, so common in our gardens, which has the curious26 faculty of secreting round itself a quantity of frothy fluid which serves to protect it from its enemies.

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cuckoo-shrikecuckoo wasp