from The American Heritage® Dictionary of the English Language, 4th Edition
- Diane de Poitiers Duchesse de Valentinois. 1499-1566. French noblewoman and mistress of Henry II. Her influence, lasting throughout his reign (1547-1559), overshadowed that of his wife, Catherine de Médicis.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. French noblewoman who was the mistress of Henry II; she had more influence over him than did his wife Catherine de Medicis (1499-1566)
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