Proper noun

2. The House of Lancaster, a dynasty of English kings and one of the opposing factions involved in the 15th century Wars of the Roses. The name comes from the fact that its members were descended from John of Gaunt, 1st Duke of Lancaster; their symbol was a red rose.
3. The City of Lancaster, a UK local government district with city status in Lancashire in North West England. Its main settlement is Lancaster, from which it obtained its city status.
4. A city in Lancashire, in the northwest of England, UK.
5. A type of four-engined British bomber aircraft built by Avro during World War 2.