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 will be used to feed wild wolves in order to tame them. 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.

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