Sentence:  It was the impotence of the money, and of all the pent-up warlike fancies that had earned it, to do anything but elaborate the wardrobe and <WSD>fatten</WSD> the financial portfolios of the owners of Empire Comics that so frustrated and enraged him. 
Meaning of the word marked with <WSD> tags:  To make thick or thicker (something containing paper, often money).