- (military, chiefly historical) A step or platform dug into the front side of a military trench so that soldiers could stand on it and fire over the parapet.
- 1917, Arthur Guy Empey, Over The Top:
- We stood on the fire step with our heads over the top, peering out into No Man's Land.
- 1929, Frederic Manning, The Middle Parts of Fortune, Vintage 2014, p. 101:
- ‘One o' the men on the firestep was 'urt too, but they said it was only a nice blighty one.’
- 1991, Pat Barker, Regeneration, Penguin 2014 (The Regeneration Trilogy), p. 140:
- They spread the lime together, sprinkling it thickly along the firestep, throwing shovelfuls at a bad patch of wall.
step in side of trench