(1):

(a.) Given to plunder; disposed or accustomed to seize by violence; seizing by force.

(2):

(a.) Accustomed to seize food; subsisting on prey, or animals seized by violence; as, a tiger is a rapacious animal; a rapacious bird.

(3):

(a.) Avaricious; grasping; extortionate; also, greedy; ravenous; voracious; as, rapacious usurers; a rapacious appetite.