(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), Syn. Duke of Lancaster
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
prop. n. 1. A city in Northwest England on the river Lune. [ wns=1 ] [ WordNet 1.5 ]
2. The English royal house that reigned from 1399 to 1461; its symbol was a red rose; called also the House of Lancaster. [ wns=2 ] Syn. -- Lancastrian line. [ WordNet 1.5 ]
prop. a. Of or pertaining to the monitorial system of instruction followed by Joseph Lancaster, of England, in which advanced pupils in a school teach pupils below them. [ 1913 Webster ]