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frog spit

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noun
  1. Also frog spittle. any of several filamentous freshwater green algae forming floating masses.
  2. cuckoo-spit(def 1).
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Origin of frog spit

First recorded in 1815–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for frog spit

frog spit

frog spittle

noun
  1. another name for cuckoo spit
  2. a foamy mass of threadlike green algae floating on ponds
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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