Versoria, æ, f. g. The nedle in a shipmans compasse, or in a dial.
Lewis and Short: Latin dictionary
versōrĭa (vors-), ae, f. [verto], a rope that guides a sail, a sheet (Plautin.); hence, trop.: versoriam capere, to turn the sail, i. e. tack: cape vorsoriam, Recipe te ad erum,