hole in (розм.)

helicopter / (розм.) heli / helo / chopper (H; hel)

telescopic sight; (розм.) scope

Fleet Satellite Communications (FSC, FLTSATCOM, розм. SATCOM)

human remains (розм. HR, as opposed to Human Resources)

floatwall combustion chamber (розм.)

aircraft floodlight / landing light, (розм.) ‘Nite-sun’

Point man (розм.)

jug (розм.)

juice (розм.)

juicy target (розм.)

juke box (розм.)

down-hole hammer

fighting hole

fill a hole (in the front)

flood hole

hole

punch / smash / tear a hole (in the defenses)

shaped hole

shell crater / hole

fire in the hole!

trunnion hole

trunnion-pin hole

blade pivot hole

bullet-hole gauge

bush firing hole (of ordnance)

crankpin hole

well hole of receiver

filling hole

interlock hole

flash hole

funnel-shaped hole

fuze-hole plug