1a battle in 1704 in Bavaria, near the village of Blindheim, in which the English, under the Duke of Marlborough, defeated the French and the Bavarians.
2 (also Blenheim Palace) the Duke of Marlborough’s seat at Woodstock near Oxford, a stately home designed by Vanbrugh (1705). The house and its estate were given to the first Duke of Marlborough in honour of his victory at Blenheim.
Blenheim in other Oxford dictionaries
Definition of Blenheim in the US English dictionary