Grasp, grip (4)
I believe the answer is:
hold
This clue is a double definition.
'grasp' is the first definition.
(I know that grasp can be written as hold)
'grip' is the second definition.
(I know that grip can be written as hold)
(Other definitions for hold that I've seen before include "Grip" , "Keep; part of ship" , "Ship's storage area" , "Continue" , "Keep; cargo space" .)