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[blee-der] /ˈbli dər/
a person who bleeds abnormally because of low clotting rate; hemophiliac.
a person or animal that bleeds easily, especially an athlete or racehorse.
a person who draws blood from a sick person; phlebotomist.
Slang. a person who drains another of money, resources, etc.; parasite or usurer.
Metallurgy. an ingot or casting from which some metal has escaped.
Also called bleeder resistor. Electricity. a resistor that is connected across a power supply for voltage regulation and to dissipate the charge remaining in capacitors when the power is discontinued.
Also called bleeder valve. a valve or opening for draining a tank, tubing, etc.
British Slang.
  1. a despicable person.
  2. a person, especially a man; fellow.
Origin of bleeder
First recorded in 1780-90; bleed + -er1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for bleeder
Historical Examples
  • "A quitter will quit and a bleeder will bleed," said the Kid sententiously.

    Old Man Curry

    Charles E. (Charles Emmett) Van Loan
  • For instance, Miss A., herself not a bleeder, comes from a bleeder-family.


    William J. Robinson
  • The diagnosis of bleeder's knee is to be made from the history.

  • A poet with revolutionary leanings, all heart, a bleeder and a believer.

    The Mighty Dead William Campbell Gault
  • A voice from a far corner called out, "Oui, the bleeder is in the end dugout, old cock!"

    Into the Jaws of Death

    Jack O'Brien
  • Much more helium than necessary was being produced, and the bleeder valve had failed.

    The Bramble Bush Gordon Randall Garrett
  • The shock of that sudden release had jarred the whole atmosphere inside the reaction chamber, and the bleeder valve had let go.

    The Bramble Bush Gordon Randall Garrett
  • But the bleeder vent at the other end of the reactor had apparently kicked at the same time.

    The Bramble Bush Gordon Randall Garrett
  • The "fire-doctor" is therefore even a greater character in his way than the "bleeder," whom we have just visited.

  • bleeder's knee, Charcot's disease, hysterical knee, and loose bodies in the joint have already been described.

British Dictionary definitions for bleeder


  1. (derogatory) a despicable person: a rotten bleeder
  2. any person; fellow: where's the bleeder gone?
(pathol) a nontechnical name for a haemophiliac
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
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Word Origin and History for bleeder

1756, "one who lets blood," agent noun from bleed (v.). As "one with hemophilia," from 1803.

Online Etymology Dictionary, © 2010 Douglas Harper
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bleeder in Medicine

bleeder bleed·er (blē'dər)

  1. A person, such as a hemophiliac, who bleeds freely or is subject to frequent hemorrhages.

  2. A blood vessel from which there is uncontrolled bleeding.

  3. A blood vessel severed by trauma or surgery that requires cautery or ligature to arrest the flow of blood.

  4. A person who draws blood from another; a phlebotomist.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for bleeder



  1. A lucky or weak base hit; blooper, texas leaguer (1930s+ Baseball)
  2. A hemophiliac (1800+)
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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