Finger

1. One of the five digits of the hand, especially one other than the thumb. He put a ring on her finger.
2. Slang. To inform on. He fingered out the thief.
3. Something, such as an oblong peninsula, that resembles on of the digits of the hand. A finger of land jutted out into the bay.
4. A degree of participation; a share. She seemed to had a finger or two in the crafting the final solution.