Dragoon \Dra*goon"\ (dr[.a]*g[=oo]n"), n. [F. dragon dragon, dragoon, fr. L. draco dragon, also, a cohort's standard (with a dragon on it). The name was given from the sense standard. See {Dragon}.] 1. ((Mil.) Formerly, a soldier who was taught and armed to serve either on horseback or on foot; now, a mounted soldier; a cavalry man. 2. A variety of pigeon. --Clarke. {Dragoon bird} (Zo["o]l.), the umbrella bird.