Sentence:  If he ran now, leaving Zygmunt to forfeit the hundred, he'd have to stay on the run. It would be the super's <WSD>c-note</WSD> Zygmunt had put up, he wouldn't be able to go back to work on Division Street till he'd squared that hundred. 
Meaning of the word marked with <WSD> tags:  A one-hundred dollar banknote.