Dictionary
ser'geant ma'jor
1. U.S. Army, Air Force, and Marine Corps.a noncommissioned officer serving as chief administrative assistant in a unit headquarters.
2. U.S. Marine Corps.a noncommissioned officer ranking above a first sergeant.
3. a small damselfish,
Abudefduf saxatilis, inhabiting warm Atlantic waters, having vertical black stripes on each side.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.