Female of the horse . In a pejorative way it means woman.
1º_ Female of the horse . It comes from the Latin equa, ae, with the same meaning. 2º_ Pejorative way of calling a woman, comparing it with a rough and tricky animal. See filly ("young and vital woman"), paica (lunfardo).
the expression " Mare " in the Río de la Plata lunfardo Argentino-Uruguayo means: woman