Sentence:  After which time the Popes of Rome, <WSD>engrossing</WSD> what they pleas'd of Politicall rule into their owne hands, extended their dominion over mens eyes, as they had before over their judgements, burning and prohibiting to be read, what they fancied not ... 
Meaning of the word marked with <WSD> tags:  To monopolize; to concentrate (something) in the single possession of someone, especially unfairly.