Green’s Dictionary of Slang

furniture n.

1. in pugilism, the face.

[US]Emerald (N.Y.) 16 Oct. 109/1–2: Round 14. – Kensett spoiled Hammond’s furniture and began to exhibit some appearance of second wind.

2. see piece of furniture under piece n.

3. (US prison) a prison-made knife.

[US]Southern Illinoisan (Carbondale, IL) 7 Apr. 4/1: Prison Slang [...] Shank, furniture: Knives.

In phrases