(military) A deep trench from which one can fire on the enemy.

(military) A trench, or section of a trench, with a concealed parapet from which soldiers can fire on the enemy.

(firearms) The ability to choose whether a weapon fires automatically or semi-automatically.

To receive the fire of arms from an enemy without giving way.

Greek fire

A pyrotechnic composition which burns with a green flame. It consists of sulfur and potassium chlorate, with some salt of barium (usually the nitrate).

Alternative form of fireblast

A raft laden with combustibles, used for setting fire to an enemy's ships.

A pyrotechnic composition of sulfur, nitre, and realgar, burning with a brilliant white light.

(historical) A combustible carried by vessels of war, chiefly for signalling, but sometimes burned for the purpose of deceiving an enemy.