Definition of ski

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ski    (sk) KEY 

NOUN:
pl. skis

1. 1. One of a pair of long flat runners of plastic, metal, or wood that curve upward in front and may be attached to a boot for gliding or traveling over snow.
   2. A water ski.
2. Something that is used as a runner on a vehicle: a helicopter with skis for landing on snow and ice.

VERB:
skied, ski·ing, skis
VERB:
intr.

To travel or glide on skis, especially as a sport.

VERB:
tr.

To travel or glide over on skis: ski a mountain slope.

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ETYMOLOGY:
Norwegian, from Old Norse skdh, stick, snowshoe; see skei- in Indo-European roots

OTHER FORMS:
skia·ble(Adjective), skier(Noun)