camboose

From this, it could be concluded that camboose was part of American English by the time the first railroads were constructed.

"1785 Common Sailors' Clothing and a Ship's Camboose from the General Carleton of Whitby".

Eighteenth century French naval records make reference to a cambose or camboose, which described the food preparation cabin on a ship's main deck, as well as the range within.

The latter sense apparently entered American naval terminology around time of the construction of the USS Constitution, whose wood-burning food preparation stove is officially referred to as the camboose.

It is likely that camboose was borrowed by American sailors who had come into contact with their French counterparts during the American Revolution (recall that France was an ally and provided crucial naval support during the conflict).