Sentence:  ... set all these togither on the fire, & boile them till the wine and water be consumed, and that the flesh and bones be separated a sunder, that you may with a paire of tongs <WSD>grabble</WSD> out the bones from the rest, thus let it be taken off and pressed through a piece of canuas, and keepe it to your use. 
Meaning of the word marked with <WSD> tags:  To lift (something) "out" in a similar way using an implement.