rugula

rugula [CL ruga+-ula], small wrinkle. ~a, -e, id est parva ruga Osb. Glouc. Deriv. 501; ~a, parva ruga vel rugella Ib. 507; tumet si niteat tensa cuticula, / quam cito contrahit senilis rugula Walt. Wimb. Carm. 331.