noun
The finger next to the thumb, used for pointing or indicating.
人差し指で地図の場所を指した。
I pointed at the location on the map with my index finger.
彼は人差し
He raised his index finger to signal for silence.
noun
second toe
The toe next to the big toe; sometimes called the index toe. Less common than the finger sense.
足の人差し指にまめができた。
I got a blister on my second toe.