matĕris or matăris (madăris), is, and matăra, ae, f. [Celtic],
a Celtic javelin, pike : nonnulli inter carros rotasque mataras ac tragulas subiciebant nostrosque vulnerabant, Caes. B. G. 1, 26, 3: humero matari trajecto, Liv. 7, 24, 3: materis Transalpina, Auct. Her. 4, 32, 43: Galli materibus configunt, Sisenn. ap. Non. 556, 8; id. ib. 9.