The acinaces, also transliterated as akinakes (Greek ) or akinaka (unattested Old Persian *akīnaka<sup>h</sup>, Sogdian kynʼk) is a type of dagger or xiphos (short sword) used mainly in the first millennium BCE in the eastern Mediterranean Basin, especially by the Medes, Scythians, Persians and Caspians, then by the Greeks. and although there is no universal design, the guard may be lobed with the hilt resembling that of a bollock dagger, or the pommel may be split or of the "antenna" type. The scabbard – as much as anything else – defines the acinaces, and usually has a large decorative mount near the opening, allowing it to be suspended from a belt on the wearer's right side.