twat (tw?t)n.1. Vulgar Slang The vulva.2. Offensive & Vulgar Slang A woman or girl.3. Vulgar Slang A foolish or contemptible person.[Perhaps of English dialectal origin, ultimately from Old English *thw?t, a cut; akin to Old English thw?tan, to cut off and to obsolete English thwaite, twaite, piece of cultivated land (from Old Norse thveit, piece of land, small coin).]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.twat (twæt; tw?t) n1. (Anatomy) the female genitals2. a girl or woman considered sexually3. a foolish or despicable person[of unknown origin]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014twat (tw?t) n. Vulgar Slang. the vulva or vagina. [1650?60; orig. uncertain] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.