Sentence:  A "Single Life" doth well with Church-men : For Charitie will hardly water the Ground, where it muſt firſt fill a <WSD>Poole.</WSD> 
Meaning of the word marked with <WSD> tags:  A small and rather deep collection of (usually) fresh water, as one supplied by a spring, or occurring in the course of a stream; a reservoir for water.