viscountess

Definitions of viscountess
1

n a wife or widow of a viscount

Type of:
married woman, wife
a married woman; a man's partner in marriage

n a noblewoman holding the rank of viscount in her own right

Examples:
Nancy Witcher Astor
British politician (born in the United States) who was the first woman to sit in the British House of Commons (1879-1964)
Type of:
peer
a nobleman (duke or marquis or earl or viscount or baron) who is a member of the British peerage

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