Sc. and U.S. [Of doubtful origin: cf. SMIT sb.2] A particle, bit.
Smitchel is also used in the same sense in U.S.
c. 1840. J. Ramsay, Eglinton Park Meeting, xxxv. Every smitch ot was a kin o red.
1884. Advance (Chicago), 10 July. A little smitch of an island.