any animal that sucks blood, especially a leech.
an extortioner or usurer.

Origin of bloodsucker

Middle English word dating back to 1350–1400; see origin at blood, sucker
Related formsblood·suck·ing, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for bloodsucker

parasite, sponge, freeloader, tick, leech, vampire, extortioner

British Dictionary definitions for bloodsucker



an animal that sucks blood, esp a leech or mosquito
a person or thing that preys upon another person, esp by extorting money
Derived Formsbloodsucking, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for bloodsucker

also blood-sucker, late 14c., of animals, from blood (n.) + sucker (n.); in the figurative sense, of persons, it is attested from 1660s.

Online Etymology Dictionary, © 2010 Douglas Harper