Noun

1. A hardened shelter, often buried partly or fully underground, designed to protect the inhabitants from falling bombs or other attacks.
2. A large container or bin for storing coal, often built outside in the yard of a house. Now rare, as different types of fuels and energy sources are being used.
3. A container for storing coal or fuel oil for a ship's engine.
4. A sand-filled hollow on a golf course.
5. An obstacle used to block an opposing player's view and field of fire.

Verb

1. To load a vessel with oil or coal for the engine.
2. To hit a golfball into a bunker.
3. To fire constantly at a hiding opponent, preventing them from firing at other players and trapping them behind the barrier. This can also refer to eliminating an opponent behind cover by rushing the position and firing at extremely close range as the player becomes exposed.

Noun

1. bunker (hardened shelter)
2. bunker (container for storing coal or fuel oil for a ship's engine)