The Collaborative International Dictionary of English v.0.48:

Spawl \Spawl\, n.
   A splinter or fragment, as of wood or stone. See Spall.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Spawl \Spawl\, n. [Cf. AS. sp[=a]tl, fr. sp[=ae]tan to spit;
   probably akin to sp[imac]wan, E. spew. Cf. Spew.]
   Scattered or ejected spittle.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

         Why must he sputter, spawl, and slaver it
         In vain, against the people's favorite.  --Swift.
   [1913 Webster]

WordNet (r) 3.0 (2006):

spawl
    n 1: a fragment broken off from the edge or face of stone or ore
         and having at least one thin edge; "a truck bearing a mound
         of blue spalls" [syn: spall, spawl]