1. Carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end
   "The bloodsucker attached itself to the swimmer's leg";
   - leech, hirudinean
    
2. [informal] A follower who hangs around a host (without benefit to the host) in hope of gain or advantage
   "His so-called friend was nothing but a bloodsucker, always borrowing money and never paying it back";
   - leech, parasite, sponge [informal], sponger

Derived forms: bloodsuckers

Type of: acolyte, annelid, annelid worm, follower, segmented worm

Part of: class Hirudinea, Hirudinea

Encyclopedia: Bloodsucker