sergeant

A noncommissioned rank in the US Army or Marine Corps that is above corporal and below staff sergeant.

Any of several ranks of noncommissioned officers in the US Army, Air Force, or Marine Corps.

One who holds any of these ranks.

The rank of police officer next below a captain, lieutenant, or inspector.

A police officer holding this rank.

A sergeant at arms.

[In this and the next four senses usually spelled serjeant.] A servant; a retainer; an armed attendant; in the fourteenth century, one holding lands by tenure of military service, commonly used as not including those who had received knighthood (afterward called esquires). Serjeants were called to various specific lines of duty besides service in war.