Frenum

·noun A cheek stripe of color.

II. Frenum ·noun ·same·as Fraenum.

III. Frenum ·noun A connecting fold of membrane serving to support or restrain any part; as, the fraenum of the tongue.

frenum
frēnum or fraenum, i, n., and more freq. (cf. Neue, Formenl. 1, 567; and v. infra), plur. heterocl...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
frenum
frēnum (frae-) ī, n plur.frēnī, ōrum, m, or frēna, ōrum, n 3 FER-, a bridle, curb, bit : frenumque...

An Elementary Latin Dictionary