Sentence:  The grant , which stretched southward to Lake Traverse - the headwaters of the Red - was made in May , 1811 , and by October of that year a small group of Scots was settling for the <WSD>winter</WSD> at York Factory on Hudson Bay . 
Meaning of the word marked with <WSD> tags:  the coldest season of the year; in the northern hemisphere it extends from the winter solstice to the vernal equinox