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Related to chiaus: chiasmus
An official Turkish messenger, emissary, or sergeant.
[Early Modern English chaus, chiaush, from Turkish çāvuş; akin to Old Turkic čabuš, military commander immediately subordinate to a khan (perhaps originally meaning "announcer" and akin to Old Turkic čāv, fame, renown).]
n., pl. chiaus•es.
(in the Ottoman Empire) a court official who served as an ambassador, emissary, or member of a ceremonial escort.
[1590–1600; < Turkish çavuş < Persian chāwush]