1º_ The Council of Mesta was a group of farmers created by Alfonso X in Castile (Spain) that between the thirteenth and nineteenth centuries gave great power to independent shepherds to raise and negotiate their animals, and especially to free cattle or without known owner that mixed with their own. The name is just a mispronunciation of "mixed", for "mixed". 2º_ Point at which two or more streams of water are mixed. It is used more in the plural.