A closed hand (4)
I believe the answer is:
fist
'a closed hand' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for fist that I've seen before include "Hand with the fingers clenched in the palm" , "handwriting?" , "Balled hand" , "Bunch of fives" , "Hit with a clenched one" .)