Sentence:  There are strange things done in the midnight sun<br />      By the men who <WSD>moil</WSD> for gold;<br />The Arctic trails have their secret tales<br />      That would make your blood run cold;<br />The Northern Lights have seen queer sights,<br />      But the queerest they ever did see<br />Was that night on the marge of Lake Lebarge<br />      I cremated Sam McGee. 
Meaning of the word marked with <WSD> tags:  To toil, to work hard.