Got lotsa questions here, today specifically looking for the definition of
"coffin door".....which best I recall was a side door into the parlor of New
England center chimney houses.  I.E.: Coffins couldn't be brought in or
leave through the small center hall with stair in front of the
fireplace/chimney mass, so a door with direct access to the room in which
family members were "laid out" before burial was needed.

Funerial Cuz