Sentence:  At length, one night, when the company by some accident broke up much sooner than ordinary, so that the candles were not half burnt out, she was not able to resist the temptation, but resolved to have them some way or other. Accordingly, as soon as the hurry was over, and the servants, as she thought, all gone to sleep, she stole out of her bed, and went down stairs, naked to her <WSD>shift</WSD> as she was, with a design to steal them ... 
Meaning of the word marked with <WSD> tags:  A type of women's undergarment, a slip.