air box handhole cover

crankcase handhole cover

battery box cover

air cover

air cover(age)

aerial refueling / air refueling / in-flight refueling (IFR) / air-to-air refueling (AAR)

air combat capable helicopter / air-to-air capable helicopter

air support field pack, field pack air support, airborne / para (air support) / Pathfinder Bergen

ammunition box

axle box

battery box

box formation

box freight car

box magazine

box trail

brain box

control box / console / desk

dead letter-box

gearbox / gear box

grid reference box

Jack-in-the-box effect

junction box

pillbox (pill box)

wargaming methods / techniques (belt, avenue in depth, box, belt-in-time)

kill box

slip-ring box

staggered box magazine

ammunition box mouth

ammunition box support

ammunition stowage box

resealing ammunition box (NATO)

maneuver box

aftersponson stowage box