■ noun
1》 a large container or compartment for storing fuel.
2》 a reinforced underground shelter for use in wartime.
3》 a hollow filled with sand, used as an obstacle on a golf course.
■ verb
1》 refuel (a ship).
2》 Golf hit (the ball) into a ~.
Origin
C16 (orig. Scots, denoting a seat or bench): perh. related to bunk 1 .