Main entry: hirudinean, bloodsucker, leech
Definition: carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end
Main entry: leech, parasite, sponge, sponger
Definition: a follower who hangs around a host (without benefit to the host) in hope of gain or advantage
Main entry: leech, phlebotomise, phlebotomize, bleed
Definition: draw blood
Usage: In the old days, doctors routinely bled patients as part of the treatment