Sentence:  There was no evidence by Thursday of the snowfall that had thickly <WSD>cottoned</WSD> the Taunton area; the town and state plows had scraped the roads clean, and the only sight of snow remaining lay in the drifts and patches on the sheltered, wooded slopes northward. 
Meaning of the word marked with <WSD> tags:  To enshroud with a layer of whiteness.