Word parts baron + -ess Pronunciation (UK) IPA (key): /ˌbæ.rəˈnɛs/ Audio (UK)(file) Noun Singular baroness Plural baronesses (countable) A baroness is the wife of a baron. (countable) (nobility) A baroness is a woman holding the rank of baron in her own right.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads