The term used for women attached to a domicile as a perk (like renting an apartment that is already furnished).
From the movie Soylent Green:
Shirl tells Thorn that she's getting a new tenant
Det. Thorn: He'll like you. You're a helluva piece of furniture.
Shirl: Don't talk to me like that. Please.
Det. Thorn: OK.
"Hey, wanna come over and help me move some furniture?"
"Whoa, that was some heavy-ass furniture."
"Dennis and I burned some old furniture last night. It was danky."