thinning out

See: erosion
References in classic literature ?
The trifling fact that, thinning out his rye, the old man used the rye he thinned out for his horses, specially struck Levin.
STOURBRIDGE 43 LUCTONIANS 7 IT MAY be a little early to talk about a one-horse race in National League 2 North but the field is certainly thinning out after leaders Stourbridge brushed aside third-placed Luctonians in a six-try thumping at Stourton Park.