{"era":"current","word":"mustang","meaning":"A small, hardy, wild horse of the North American plains.","children":[{"era":"16th century","word":"mestengo","meaning":"stray, wild, belonging to no owner","children":[{"era":"13th century","word":"mesta","meaning":"member of the Mesta who collects stray animals","children":[],"language":"Old Spanish"},{"era":"13th century","word":"-enco","meaning":"member of the Mesta who collects stray animals","children":[],"language":"Old Spanish"}],"language":"Spanish"}],"language":"Modern English"}