plural of bloodsucker

An animal that drinks the blood of others, especially by sucking blood through a puncture wound; a hemovore. / (by extension) Any parasite.

(of an insect or animal) That draws off the blood of another animal, or a person. / (by extension, of a person) parasitic, leechlike or freeloading

(very rare) The state or actions of being a bloodsucker; parasitism.