from The American Heritage® Dictionary of the English Language, 4th Edition
- John of Gaunt Duke of Lancaster. 1340-1399. English soldier. The fourth son of Edward III, he ruled England during his father's last years and in the beginning of Richard II's reign.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the fourth son of Edward III who was the effective ruler of England during the close of his father's reign and during the minority of Richard II; his son was Henry Bolingbroke (1340-1399)
Sorry, no etymologies found.