What is "bullet wood"

Bullet \Bul"let\, n. [F. boulet, dim. of boule ball. See Bull an edict, and cf. Boulet.]

1. A small ball.

2. A missile, usually of lead, and round or elongated in form, to be discharged from a rifle, musket, pistol, or other small firearm.

3. A cannon ball. [Obs.]

   A ship before Greenwich . . . shot off her ordnance, one piece being charged with a bullet of stone.
   --Stow.

4. The fetlock of a horse.

   Note: [See Illust. under Horse.]

   Bullet tree. See Bully tree.

   Bullet wood, the wood of the bullet tree.