Sentence:  After heavy rains and an onslaught of mice , snow fell on October 15 , 1825 , and remained on the ground through a winter so cold that the ice on the Red was five feet <WSD>thick</WSD> . 
Meaning of the word marked with <WSD> tags:  not thin; of a specific thickness or of relatively great extent from one surface to the opposite usually in the smallest of the three solid dimensions