lībrīlis, e, adj. libra. Of a pound, weighing a pound: tunica, Vop. Bonos. 15, 8: fundis librilibus sudibusque, Gallos proterrent, throwing stones of a pound each, Caes. B. G. 7, 81, 4.

— Of or pertaining to weighing.

—Hence, subst.: lībrīle, is, n. A balance, pair of scales: in librili perpendere, Gell. 20, 1, 34.

— A scale-beam: librile scapus librae, Paul. ex Fest. p. 116 Mull.