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parasite, sponge, leech, sponger | a follower who hangs around a host (without benefit to the host) in hope of gain or advantage | |
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leech, bloodsucker, hirudinean | carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end | |
V2 |
bleed, leech, phlebotomize, phlebotomise | [in medicine] draw blood |