Sentence:  [S]he had thought to discover a burglar of one or another accepted type—either a dashing cracksman in full-blown evening dress, lithe, polished, pantherish, or a common yegg, a red-eyed, unshaven burly brute in the rags and tatters of a <WSD>tramp</WSD>. 
Meaning of the word marked with <WSD> tags:  (homeless person)  A homeless person; a vagabond.