U.S. [Cf. SMOUCH sb.4 and SMUTCH sb.] A smutch or smear.

1

1842.  Motley, Lett. (1889), I. 136. The body of the Child is a mere smooch of lamp-black.

2

1869.  Mrs. Whitney, We Girls, iii. (1873), 58. A smooch of stove-polish across her arm.

3