Frēnch or French leave1, a.
a. [Lat. Franci, pl., the Franks; O. Fr. Franceis, Franchois, François, N. Fr. Français, Pr. & Sp. Frances, Pg. Francez, It. Francese. See FRANC and FRANK.] (Geog.) Pertaining to France or its inhabitants.
French leave, an informal departure.