midget sub

midget combat unit

midget submarine

midget truck

single-digit midget

sub- (prefix)

sub-ammunition

sub-calibre shell

submachine gun / sub-machine gun (SMG; smg)

submarine (SS; sub)

demining sub-unit

sub-caliber ammunition

carrier-killing sub

armor-piercing sub-caliber round

feed horn (of sub-machine gun)

sub

sub-group of petroleum products

sub-base course

A-sub