Source : Webster's Revised Unabridged Dictionary (1913)

Spittle \Spit"tle\, v. t. [See {Spit} to spade.]
   To dig or stir with a small spade. [Prov. Eng.]

Spittle \Spit"tle\, n.
   A small sort of spade. [Prov. Eng.]

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.

   {Spittle insect}. (Zo["o]l.) See {Cuckoo spit}
   (b), under {Cuckoo}.

Spittle \Spit"tle\, n.
   See {Spital}. [Obs.] --B. Jonson.

Source : WordNet®

spittle
     n : a clear liquid secreted into the mouth by the salivary
         glands and mucous glands of the mouth; moistens the mouth
         and starts the digestion of starches [syn: {saliva}, {spit}]