from The American Heritage® Dictionary of the English Language, 4th Edition
- n. In Arthurian legend, an Irish princess who married the king of Cornwall and had a love affair with his knight Tristan.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A female given name.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (Middle Ages) the bride of the king of Cornwall who (according to legend) fell in love with the king's nephew (Tristan) after they mistakenly drank a love potion that left them eternally in love with each other
From the name of the queen who fell in love with Tristan in medieval romance; possibly from Celtic, of uncertain meaning, or from Germanic, equivalent to Old High German is ("ice") + hiltja ("battle"). (Wiktionary)