knuckle-bone noun. ['nʌk(ǝ)lbǝʊn] LME.
[from KNUCKLE noun + BONE noun.]
1. A bone forming a knuckle; spec. the rounded end at the joint of a finger-bone. LME.

2. a. A limb-bone of an animal with a ball-like knob at the joint-end; the rounded end of such a bone. Also, a knuckle of meat. LME.
b. A metacarpal or metatarsal bone of a sheep; in pl., (such bones used in) a game of jacks. M18.

[TahlilGaran] English Dictionary ▲