GRIZZLE

I. noun Etymology: Middle English grisel, adjective, gray, from Anglo-French, from gris, of Germanic origin; akin to Old High German grīs gray Date: 1601 gray hair, 2. a roan coat pattern or color, a gray or roan animal, II. verb (~d; grizzling) Date: 1740 transitive verb to make grayish, intransitive verb gripe , grumble , to become grayish