That's always been my definition, wide bed and carriage wings, lots of thread/ feed combinations. Trouble with that, most gunsmiths don't have a real lathe. Getting a barrel down a puny spindle bore is enough, chamber reaming in a steady rest etc.
An early gunsmith lathe project was barrel of a 1847 Walker-Colt replica. The cylinder end went fine, had to build jaws for work on muzzle end. Frame too large to get into spindle bore of 2-1/16", too much stick out for indicating rifled surface.