Wilson jerked the gun from Davis' weak grasp and hurled it away.

Wisely, no doubt: children have a weak grasp of historical time.

Or, lacking that, a weak grasp of recent history.

He freed himself from her weak grasp and bent to fumble among the debris on the floor to pick up a dark bottle.

Or as Mike said, a weak grasp on reality; possibly both.

Hernandez reached out and took Leishman's forearm in a weak grasp.

Of those thousands, most escaped Mars' weak gravitational grasp, and sailed on.

His free hand swept out and snatched the gun from her weak grasp.

We did our best by her, Kirby, but she has-a very weak grasp on reality.

Enough function has returned to his right hand to allow a weak grasp; he can pick up a fork or spoon, but nothing heavier.