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- DictionaryIn·dex fin·ger/ˈinˌdeks ˌfiNGɡər/
noun
- 1. the finger next to the thumb; the forefinger.
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noun
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The index finger is the second digit of a human hand. It is located between the thumb and the middle finger. It is usually the most dextrous and sensitive digit of the hand, though not the longest. It is shorter than the middle finger, and may be shorter or longer than the ring finger (see digit ratio). Wikipedia