·vi To Grope; to feel with the hands.
II. Grabble ·vi To lie prostrate on the belly; to sprawl on the ground; to Grovel.
To seize. To grabble the bit; to seize any one's money. CANT. ...
Dictionary of The Vulgar Tongue by Francis Grose
To endeavour to hook a sunk article. To catch fish by hand in a brook. ...
The Sailor's Word-Book