grāvastellus — Lewis & Short
grāvastellus, i, m.dim.† gravaster, from † gravus, kindr. to grau=s and the Ger. grau; Engl. gray; the ground-form of ravus,
quis est haec muliercula et illic gravastellus qui venit?Plaut. Ep. 5, 1, 14; cf.: gravastellus senior, Paul. ex Fest. p. 96 Müll. (where it is erroneously derived from gravis; moreover, he reads s. v. Ravi coloris, p. 272, in Plautus, ravistellus).