noun
: a sled that consists of one thick runner curved much like a barrel stave to which is attached an upright with a seat having grips on either side of its undersurface and that is used on a slope ; also : a person who rides a jack jumper
noun
: a sled that consists of one thick runner curved much like a barrel stave to which is attached an upright with a seat having grips on either side of its undersurface and that is used on a slope ; also : a person who rides a jack jumper
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012