index finger
US /ˈɪn.deks ˌfɪŋ.ɡər/
UK /ˈɪn.deks ˌfɪŋ.ɡər/

1.
食指
the finger next to the thumb; the forefinger
:
•
He pointed with his index finger.
他用食指指著。
•
She held up her index finger to signal 'one moment'.
她舉起食指示意“等一下”。
食指
the finger next to the thumb; the forefinger