finger

A slender jointed extremity of the human hand, exclusive of the thumb.

"Humans have two hands and ten fingers. Each hand has one thumb and four fingers."

Similar or similar-looking extremities in other animals, particularly:

Something similar in shape to the human finger, particularly:

To identify or point out. Also put the finger on. To report to or identify for the authorities, rat on, rat out, squeal on, tattle on, turn in.

To poke, probe, feel, or fondle with a finger or fingers.

To use the fingers to penetrate and sexually stimulate one's own or another person's vagina or anus; to fingerbang