Sentence:  He had one hand on the bounce bottle—and he'd never <WSD>let go</WSD> of that since he got back to the table—but he had a handkerchief in the other and was swabbing his deadlights with it. 
Meaning of the word marked with <WSD> tags:  To release from one's grasp; to go from a state of holding on to a state of no longer holding on.