He stuck his index finger in the red welt around the spot where bin Laden shot me.
She stabs at the air with her index finger, the shocks of her rust-colored hair bouncing with every word of her response.
The intermediate and distal phalanges of the index finger show contraction, as if the Palestinian Arab were squeezing something.
index finger n.
The finger next to the thumb. Also called first finger, forefinger.