sergeant first classsergeant first class
U.S. Army a noncommissioned officer of the seventh grade, ranking above staff sergeant and below master or first sergeant
sergeant first class
nounpl. sergeants first class
- A noncommissioned rank in the US Army that is above staff sergeant and below master sergeant.
- One who holds this rank.
(plural sergeants first class)
- (US, Army) A non-commissioned officer in the United States Army, ranking above a staff sergeant and below a master sergeant or first sergeant.