matross
/mætrɒs/Definitions
1. noun
A man who handles a matross (a light cannon or mortar), especially one attached to a ship.
“The matross helped load the cannon onto the ship’s deck.”
2. noun
A man who serves as a gunner or assistant gunner on a mortar or other small artillery piece.
“The matross worked closely with the gunner to aim the mortar.”