Blood"suck`er (?), n.
1. Zool.
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.
[Obs.]
Shak.
3.
A hard and exacting master, landlord, or money lender; an extortioner.
© Webster 1913.