definition of
leech

[1] #1 leech n. [bloodsucker, hirudinean] carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end. wn

[2] #2 leech v. [bleed, phlebotomize, phlebotomise] draw blood; "In the old days, doctors routinely bled patients as part of the treatment". wn

[3] #3 leech n. [parasite, sponge, sponger] a follower who hangs around a host (without benefit to the host) in hope of gain or advantage. wn