sitzmark, n.: An impression made in the snow by a skier falling backwards on his or her backside; an act of falling in this way.’
Pronunciation: Brit. /ˈsɪtsmɑːk/, U.S. /ˈsɪtsˌmɑrk/
Origin: Apparently a borrowing from German, combined with an English element; probably modelled on a German lexical item. Etymons: German sitzen, mark n.1
Etymology:Apparently < German sitzen sit v. + mark n.1, probably after German Sitzspur (1926 or earlier in this sense; 19th cent. in sense ‘trace or impression left by a person or animal in sitting position’).
“Sitzmark.” (n.d.) Oxford English Dictionary.