meaning of bloodsucker
1. Any animal that sucks blood; esp. , the leech (Hirudo medicinalis), and related species.
2. One who sheds blood; a cruel, bloodthirsty man; one guilty of bloodshed; a murderer.
3. A hard and exacting master, landlord, or money lender; an extortioner.
4. carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end