index **
index finger
forefinger

She then asked me to focus on the index finger of my left hand.

She held up the index finger of her right hand.

She held her index finger up, as if about to point at something.

He held up the index finger of his right hand.

He turned to her then with an index finger up.

It's hard enough trying to get your index finger inside.

Sure enough, the patient has a paper cut on his index finger.

She held up an index finger, telling me to wait.

He held up an index finger and moved it from the right to the left.

During the fighting he lost an eye and an index finger.