luge 
(lzh)
(lzh)n.
1.
a. A sport in which a small open sled is ridden by one or two people lying face-up with the feet pointed downhill, usually over an ice-covered course in a timed competition.
b. The sled used in this sport.
2.
a. The sport of street luge.
b. The board used in street luge.
[French dialectal, from Medieval Latin sludia, perhaps of Celtic origin.]
luge v.
luger n.