Sentence:  But well he found that who is too busy in the foundation of a house may pull the building about his ears ; for the people, already tired with their own divisions (of which his <WSD>clampering</WSD> had been a principal nurse), and beginning now to espy a haven of rest, hated anything that should hinder them from it. 
Meaning of the word marked with <WSD> tags:  To complain in an irritating manner.