The Collaborative International Dictionary of English v.0.48:

Spital \Spit"al\, n. [Abbreviated from hospital.] [Written also
   spittle.]
   A hospital. [Obs.] --Shak.
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The Collaborative International Dictionary of English v.0.48:

Spittle \Spit"tle\, n.
   See Spital. [Obs.] --B. Jonson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Spittle \Spit"tle\, v. t. [See Spit to spade.]
   To dig or stir with a small spade. [Prov. Eng.]
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The Collaborative International Dictionary of English v.0.48:

Spittle \Spit"tle\, n.
   A small sort of spade. [Prov. Eng.]
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The Collaborative International Dictionary of English v.0.48:

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]

WordNet (r) 3.0 (2006):

spittle
    n 1: 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, spittle]