Webster’s Revised Unabridged Dictionary · 1913
Spat
Spat, imp. of Spit. [Obs. or R.]
Spat, n. [From the root of spit; hence, literally, that which is ejected.] A young oyster or other bivalve mollusk, both before and after it first becomes adherent, or such young, collectively.
Spat, v. i. & t. To emit spawn; to emit, as spawn.
Spat, n. [Cf. Pat.] 1. A light blow with something flat. [U.S. & Prov. Eng.]
2. Hence, a petty combat, esp. a verbal one; a little quarrel, dispute, or dissension. [U. S.]
Spat, v. i. To dispute. [R.] Smart.
Spat, v. t. [imp. & p. p. Spatted; p. pr. & vb. n. Spatting.] To slap, as with the open hand; to clap together; as the hands. [Local, U.S.]
Little Isabel leaped up and down, spatting her hands. Judd.