Look up an image:
Explore by theme
handholds 
Projection over which the hand is placed or hollow into which the fingers are inserted in order to advance.
open hand
Open hold with the fingers outstretched and the palm gripping the rock.
crimp
Closed hold with the fingertips on the rock face and the thumb pushed against the index finger.
pinch
Hold that is squeezed between the thumb and fingers.
