1. A person, such as a hemophiliac, who bleeds freely or is subject to frequent hemorrhages.
a. Slang A blood vessel from which there is uncontrolled bleeding.
b. A blood vessel severed by trauma or surgery that requires cautery or ligature to arrest the flow of blood.
3. A person who draws blood from another; a phlebotomist.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.