μάχαιρα
Alt. μάχαιρα, ἡ,
Etym. μάχομαι
1. "a large knife or dirk", worn by the heroes of the Iliad next the sword-sheath, Il.: generally, "a knife for cutting up" meat, Hdt., attic
2. as a weapon, "a short sword or dagger", Hdt., etc.: "a sabre or bent sword", opp. to the straight sword (ξίφος), Xen.
3. "a" kind of "rasor", μιᾷ μαχαίρᾳ "with the rasor's" single blade, opp. to διπλῆ μ. "scissars", Ar.