Saber \Sa"ber\, Sabre \Sa"bre\, n. [F. sabre, G. s["a]bel; of uncertain origin; cf. Hung. sz['a]blya, Pol. szabla, Russ. sabla, and L. Gr. zabo`s crooked, curved.] A sword with a broad and heavy blade, thick at the back, and usually more or less curved like a scimiter; a cavalry sword. {Saber fish}, or {Sabre fish} (Zo["o]l.), the cutlass fish.