Bunker

a large bin or receptacle; a fixed chest or box:
a coal bunker.
a fortification set mostly below the surface of the ground with overhead protection provided by logs and earth or by concrete and fitted with openings through which guns may be fired.
Golf. any obstacle, as a sand trap or mound of dirt, constituting a hazard.
Nautical.

to provide fuel for (a vessel).
to convey (bulk cargo except grain) from a vessel to an adjacent storehouse.

Golf. to hit (a ball) into a bunker.
to equip with or as if with bunkers:
to bunker an army’s defenses.
Contemporary Examples

The Secret Soviet Power Bunker—in Latvia, a Hiding Place for the Elite Brandon Presser September 24, 2014
David Oyelowo on Playing Martin Luther King Jr., Ebola Fears, and Race in Hollywood Marlow Stern October 14, 2014
Inside the Gaddafis’ Lair Babak Dehghanpisheh August 24, 2011
What Beinart Overlooks in His ‘American Jewish Cocoon’ Article Gil Troy September 3, 2013
Our Most Polluted States The Daily Beast May 18, 2010

Historical Examples

The American Claimant Mark Twain (Samuel Clemens)
England, Picturesque and Descriptive Joel Cook
The Arena Various
Our Young Folks, Vol 1, No. 1 Various
Six Little Bunkers at Cowboy Jack’s Laura Lee Hope

noun
a large storage container or tank, as for coal
Also called (esp US and Canadian) sand trap. an obstacle on a golf course, usually a sand-filled hollow bordered by a ridge
an underground shelter, often of reinforced concrete and with a bank and embrasures for guns above ground
verb
(transitive) (golf)

to drive (the ball) into a bunker
(passive) to have one’s ball trapped in a bunker

(transitive) (nautical)

to fuel (a ship)
to transfer (cargo) from a ship to a storehouse

n.