Harmost \Har"most\ (h[aum]r"m[o^]st), n. [Gr. "armosth`s, fr. "armo`zein to join, arrange, command: cf. F. harmoste. See {Harmony}.] (Gr. Antiq.) A city governor or prefect appointed by the Spartans in the cities subjugated by them. [1913 Webster]