ski

II. ski² BrE AmE verb (past tense and past participle skied, present participle skiing, third person singular skis) [intransitive]
to move on skis for sport or in order to travel on snow or water ⇨ skiing:
I’m learning to ski.
We skied down to the village of Argentière.

Oxford Advanced Learner's Dictionary

verb (ski·ing, skied, skied)
1. intransitive (+ adv./prep.) to move over snow on skis, especially as a sport
• How well do you ski?

• We skied down the slope one by one.
2. go skiing intransitive to spend time skiing for pleasure
• We went skiing in France in March.
see also skiing, waterski

Word Origin:

mid 18th cent.: from Norwegian, from Old Norse skíth ‘billet, snowshoe’.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition

ski / skiː / verb [ I or T ]

B1 to move over snow on skis:

He skied down the hill.

Shall we go skiing?

Collins COBUILD Advanced Learner’s English Dictionary

ski

/ski:/
(skis, skiing, skied)

Frequency: The word is one of the 3000 most common words in English.

1.
Skis are long, flat, narrow pieces of wood, metal, or plastic that are fastened to boots so that you can move easily on snow or water.
...a pair of skis.
N-COUNT

2.
When people ski, they move over snow or water on skis.
They surf, ski and ride...
The whole party then skied off.
VERB: V, V adv/prep
• ski‧er (skiers)
He is an enthusiastic skier.
N-COUNT
• ski‧ing
My hobbies were skiing and scuba diving.
...a skiing holiday.
N-UNCOUNT: oft N n

3.
You use ski to refer to things that are concerned with skiing.
...the Swiss ski resort of Klosters.
...a private ski instructor.
ADJ: ADJ n

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary:

²ski verb skies; skied; ski·ing : to move or glide on skis over snow or water

[no obj]
• He loves to ski.

[+ obj]
• I have skied that mountain before.
- see also water-ski
- ski·er noun, pl -ers [count]
• My brother is a very good skier.
• Skiers love fresh snow.