Jumping (with a rope?) (8)
I believe the answer is:
skipping
'jumping with a rope?' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for skipping that I've seen before include "Jumping lightly or bypassing" , "Missing - physical exercise" , "Cutting" , "Jumping with a rope" , "Hopping over a turning rope" .)