noun a bright-colored south african grosbeak (pyromelana orix), having the back red and the lower parts black.
2. grenadier ·noun any marine fish of the genus macrurus, in which the body and tail taper to a point; they mostly inhabit the deep sea;
called also onion fish, and rat-tail fish.
3. grenadier ·noun originaly, a soldier who carried and threw grenades; afterward, one of a company attached to each regiment or battalion, taking post on the right of the line, and wearing a peculiar uniform. in modern times, a member of a special regiment or corps; as, a grenadier of the guard of napoleon i. one of the regiment of grenadier guards of the british army, ·etc.