Groat

groat \ˈgrōt\ noun: 1. (usually plural but singular or plural in construction) hulled grain broken into fragments larger than grits, 2. a grain (as of oats) exclusive of the hull

Etymology: Middle English grotes, plural, from Old English grotan, plural of grot; akin to Old English grēot grit

I don’t hear many Americans use the word groats.