spĕcŭlātōrĭus, a, um, adj. [speculator],
I of or belonging to spies or scouts : navigia, spy-boats , vessels of observation , Caes. B. G. 4, 26; also called speculatoriae naves, Liv. 30, 10, 14; 35, 26, 9; 36, 42, 8; and caliga, worn by spies or scouts , Suet. Calig. 52.— Hence, subst.: spĕcŭlātōrĭa , ae, f.
A (Sc. navis.) A spy-boat , Liv. 22, 19, 5; 22, 36, 42.—
B (Sc. caliga.) A boot worn by spies or scouts , Tert. Cor. Mil. 1.