Baroness

n. wife of a baron; woman who has inherited a baronial title

n. nobleman, count, ruler

Baroness could refer to:Female title of nobility, the equivalent of BaronThe Baroness, a fiction book series by Paul KenyonBaroness (G.I. Joe), an officer of the fictional COBRA Organization, and a villain in the G.I. Joe universeBaroness (movie), a 2000 filmBaroness (band), a metal band based out of Savannah, Georgia
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Noun
1. a noblewoman who holds the rank of baron or who is the wife or widow of a baron
(hypernym) Lady, noblewoman, peeress

(n.)
A baron's wife; also, a lady who holds the baronial title in her own right; as, the Baroness Burdett-Coutts.
  

Wife of a Baron or a woman who held a barony in her own right; in literature ‘baroness’ generally refers to a holder in her own right, while the title ‘lady’ is reserved for Barons’ wives.