Tra từ leech - Từ điển WordNet v3.1

I - noun

1. carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end (Freq. 1)
• Syn:
bloodsucker, hirudinean
• Hypernyms:
annelid, annelid worm, segmented worm
• Hyponyms:
medicinal leech, Hirudo medicinalis, horseleech
• Member Holonyms:
Hirudinea, class Hirudinea
2. a follower who hangs around a host (without benefit to the host) in hope of gain or advantage
• Syn:
parasite, sponge, sponger
• Derivationally related forms:
sponge (for: sponger), sponge (for: sponge), parasitic (for: parasite), parasitical (for: parasite)
• Hypernyms:
follower

II - verb

draw blood
- In the old days, doctors routinely bled patients as part of the treatment
• Syn:
bleed, phlebotomize, phlebotomise
• Derivationally related forms:
phlebotomy (for: phlebotomize)
• Topics:
medicine, practice of medicine
• Hypernyms:
treat, care for
• Verb Frames:
- Somebody ----s somebody