A covering for protecting a gun, generally of cloth or leather: sometimes provided with a handle for carrying the gun when it is not to be used.(noun)
The Century Dictionary (Public Domain)
Use "gun-case" in a sentence
"Milly and I had read the cards which dangled from the trunk-handles and gun-case."
"To the left of the gun-case, an open door gave on the jail itself-three cells on each side of a short corridor, and a smell of strong lye soap drifting out."
"Now they pull up at a lodge, and take on board a well-muffled-up sportsman, with his gun-case and carpet-bag, An early up-coach meets them, and the coachmen gather up their horses, and pass one another with the accustomed lift of the elbow, each team doing eleven miles an hour, with a mile to spare behind if necessary."