Sentence:  "Yes, young people are usually blind to everything but their own wishes, and seldom imagine how much those wishes cost others," said Mrs Garth. She did not mean to go beyond this salutary general doctrine, and threw her indignation into a needless unwinding of her <WSD>worsted</WSD>, knitting her brow at it with a grand air. 
Meaning of the word marked with <WSD> tags:  Yarn made from long strands of wool.