Sentence:  But in the meantime the beer runner , unhappy with this solution , telephoned Torrio and returned to O ' Banion with the message : `` Say , Dionie , I just been talking to Johnny , and he said to <WSD>let</WSD> them cops have the three hundred . 
Meaning of the word marked with <WSD> tags:  make it possible through a specific action or lack of action for something to happen