Clutched (7)
'clutched' is the definition.
(grabbing is a kind of clutching)
This is all the clue.
(Other definitions for grabbed that I've seen before include "Seized hold of" , "Roughly seized" , "Snatched" .)
(Other definitions for grasped that I've seen before include "Took hold of or got the meaning" , "Got the picture" , "Held firmly or got the meaning" , "Understood" .)