Dowager

Part of speech: noun (n.)

1. A widow endowed, or having a jointure; a widow who either enjoys a dower from her deceased husband, or has property of her own brought by her to her husband on marriage, and settled on her after his decease. Blount. Burrill.

2. A title given in England to a widow, to distinguish her from the wife of her husband's heir bearing the same name; -- chiefly applied to widows of personages of rank. With prudes for proctors, dowagers for deans. Tennyson. Queen dowager, the widow of a king.