Sentence:  As we do turn our backs / From our companion thrown into his grave, / So his familiars to his buried fortunes / <WSD>Slink</WSD> all away, leave their false vows with him, / Like empty purses pick'd; and his poor self, / A dedicated beggar to the air, / With his disease of all-shunn'd poverty, / Walks, like contempt, alone. 
Meaning of the word marked with <WSD> tags:  To sneak about furtively.