English
Noun
fire bay (plural fire bays)
-  (military) A trench, or section of a trench, with a concealed parapet from which soldiers can fire on the enemy.
-  1929, Frederic Manning, The Middle Parts of Fortune, Vintage 2014, p. 219:
-  Presently Corporal Hamley motioned him forward into the next fire-bay.
 
 
-  1991, Pat Barker, Regeneration, Penguin 2014 (The Regeneration Trilogy), p. 138:
-  In the third fire bay he found Sawdon and Towers crouched down over a small fire made out of shredded sandbags and candle ends, coaxing the flames.