Interpreter \In*ter"pret*er\, n. [Cf. OF. entrepreteur, L. interpretator.]

One who or that which interprets, explains, or expounds; a translator; especially, a person who translates orally between two parties.

We think most men's actions to be the interpreters of their thoughts. --Locke.

Source: Webster's Revised Unabridged Dictionary (1913)