0 the finger next to the thumb
1 the finger next to the thumb; forefinger:
He scans the board left-to-right and doesn't move until he has spotted the correct key, and then extends his left index finger.
Let us consider a movement with the right index finger, say.
If the operator tries to grasp an object with two fingers most naturally he uses his thumb and his index finger.
The joints of the index finger are aligned: that is, the finger itself is extended or straight.
The index finger is the only finger selected.
The index finger is the most salient element of this handshape.
Pointing with an index finger is probably the most frequent realization of a deictic gesture.
Finally, the 10 deviant children had a larger difference in temperature between the right and left index finger, suggesting greater sympathetic lability.
