Try Our Apps


What is the origin of "December"?

white hat

noun, Informal.
a virtuous hero, especially in a cowboy movie; good guy.
Compare black hat (def 1).
Related forms
white-hat, white-hatted, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for white-hat
Historical Examples
British Dictionary definitions for white-hat

white hat

  1. a computer hacker who is hired by an organization to undertake nonmalicious hacking work in order to discover computer-security flaws
  2. (as modifier): a white-hat hacker Compare black hat
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
Cite This Source
Contemporary definitions for white-hat

a computer programmer hired to prevent illegal acts such as hacking a forbidden network or sending out a virus or worm; also, a computer expert, usually a former hacker, who now uses his or her skills for legitimate causes; also called white hat hacker

Word Origin

fr its use in western /cowboy movies

Usage Note

computing's 21st Century Lexicon
Copyright © 2003-2014, LLC
Cite This Source
Slang definitions & phrases for white-hat



A clown (1890s+ Circus)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
Cite This Source

Word of the Day

Word Value for white

Scrabble Words With Friends