sergeant major

views updated May 29 2018

ser·geant ma·jor • n. 1. an noncommissioned officer in the US Army or Marine Corps of the highest rank, above master sergeant and below warrant officer. 2. a warrant officer in the British army. 3. a fish (Abudefduf saxatilis, family Pomacentridae) with boldly striped sides that lives in warm seas, typically on coral reefs.