资料来源 : Webster's Revised Unabridged Dictionary (1913)

Froth \Froth\, n. [OE. frothe, Icel. fro[eth]a; akin to Dan.
   fraade, Sw. fradga, AS. [=a]freo[eth]an to froth.]
   1. The bubbles caused in fluids or liquors by fermentation or
      agitation; spume; foam; esp., a spume of saliva caused by
      disease or nervous excitement.

   2. Any empty, senseless show of wit or eloquence; rhetoric
      without thought. --Johnson.

            It was a long speech, but all froth.  --L'Estrange.

   3. Light, unsubstantial matter. --Tusser.

   {Froth insect} (Zo["o]l.), the cuckoo spit or frog hopper; --
      called also {froth spit}, {froth worm}, and {froth fly}.
      

   {Froth spit}. See {Cuckoo spit}, under Cuckoo.