See also: stoneboat travois (def. 3)
- 1905  When ripe it was cut with the sickle, bound in sheaves, and taken on the umper to the threshing-floor.
2 n. the Rocky Mountain mule deer, Odocoileus hemionus hemionus.
See also: mule deer
- 1948  When going at full speed the [mule] deer travels with a peculiar bounding gait that has given to it the name of "jumper".
- 1958  When alarmed, mule deer have the habit of making vertical jumps; this has gained for them the name "jumper."
3 n. a jumping mouse, Zapus princeps, of the Rocky Mountain region.
- 1946  During the winter the Jumpers are said to go underground for greater warmth, their hibernation period lasting six months.