Sentence:  I was then lying at length upon that very couch, the scene of Mr. H . . .'s polite joys, in an undress which was with all the art of negligence flowing loose, and in a most tempting disorder: no stay, no hoop . . . no <WSD>incumbrance</WSD> whatever. 
Meaning of the word marked with <WSD> tags:  A burden; a thing that must be carried.