head wind

penetrating head injury / open head injury

drop head body (drop-head body)

head-to-head flyoff

wind rode / wind-rode

wind relative bearing / wind-relative bearing

wind's eye (in the wind's eye)

case head

cylinder head

general purpose head

head count (headcount)

head harness

head injury criterion (HIC) (med.)

Head of Directing Staff (HDS) (exercises)

Head of Logistics

Head of Mission

head room

head-on approach

head-on battle

head-up display / heads-up-display (HUD)

high explosive antitank and antipersonnel head

high explosive antitank head

high explosive head

homing head

navigation head

pointed head

azimuth aiming circle head

camouflage head net (headnet)

passive electronic homing head

amphibious beach-head

hydrostatic head

penetrating head wounds

adjustable head space feature