Lancaster: Meaning and Definition of

Lan•cas•ter

1. the English royal family that reigned 1399–1461, descended from John of Gaunt (Duke of Lancaster), and that included Henry IV, Henry V, and Henry VI. Cf. York (def. 1).
2. a member of this family.
3. a city in Lancashire, in NW England. 125,500.
4. a city in SE Pennsylvania. 54,725.
5. a town in S California. 48,027.
6. a city in central Ohio. 34,953.
7. a town in N Texas. 14,807.
8. a town in W New York. 13,056.
9. Lancashire.