Is there a non-medical name for the curve where index finger and thumb meet?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Underwater World

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Chapters
00:00 Is There A Non-Medical Name For The Curve Where Index Finger And Thumb Meet?
00:42 Answer 1 Score 58
01:06 Accepted Answer Score 47
01:24 Answer 3 Score 4
02:03 Thank you

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Tags
#singlewordrequests #terminology

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