[groat] n [ME grotes, pl., fr. OE grotan, pl. of grot; akin to OE greot grit] (12c) 1 usu pl but sing or pl in constr: hulled grain broken into fragments larger than grits
2: a grain (as of oats) exclusive of the hull
[2]groat n [ME groot, fr. MD] (14c): an old British coin worth four pennies