trou

le trou (FR N-M) hole, depression (natural or artificial) in the exterior surface of something; natural hollowed out shelter; modest country home, or small, little-known country village; hole, opening that goes all the way through a solid body; orifice, cavity. First appears in French in the 13th century, (12th c.) trau, from Latin traucum, traugum. (Eluard, Hyspa, Louÿs)