Bone

Bones are items dropped by Skeletons when they are killed. Bones were added in the Minecraft Beta 1.2 update. Skeletons drop 0-2 bones on death.

Uses
In Beta 1.4, bones are used to tame wild wolves. Bones can also be used to make Bone Meal, which serves two purposes: it can be used as a fertilizer for farming that immediately makes plants grow to their mature state, or it can act as a dye that makes wool white and can be combined with other dyes. Bone Meal does not work 100% of the time when used as a fertilizer.

Crafting
Bone creates 3 bone meals when put in the crafting table.

Trivia

 * Since Beta 1.4, Bones can be found in dungeons.