n. & v.
n. 1 a large container or compartment for storing fuel. 2 a reinforced underground shelter, esp. for use in wartime. 3 a hollow filled with sand, used as an obstacle in a golf-course.
v.tr. 1 fill the fuel bunkers of (a ship etc.). 2 (usu. in passive) a trap in a bunker (in sense 3). b bring into difficulties.
[ 19th c.: orig. unkn. ]