Source : Webster's Revised Unabridged Dictionary (1913)

Spawl \Spawl\, v. i. & t. [imp. & p. p. {Spawled}; p. pr. & vb.
   n. {Spawling}.] [Cf. AS. sp[=a]tlian.]
   To scatter spittle from the mouth; to spit, as saliva.

         Why must he sputter, spawl, and slaver it In vain,
         against the people's favorite.           --Swift.