'Spittle insect' definitions:

Definition of 'spittle insect'

From: WordNet
noun
Small leaping herbivorous insect that lives in a mass of protective froth which it and its larvae secrete [syn: spittle insect, spittlebug]

Definition of 'Spittle insect'

From: GCIDE
  • Spittle \Spit"tle\, n. [From Spit to eject from the mouth: cf. Spattle, and AS. sp[=a]tl.] The thick, moist matter which is secreted by the salivary glands; saliva; spit. [1913 Webster]
  • Spittle insect. (Zool.) See Cuckoo spit (b), under Cuckoo. [1913 Webster]