hiking
US /ˈhaɪ.kɪŋ/
UK /ˈhaɪ.kɪŋ/

1.
the activity of going for long walks, especially in the country or woods
:
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We went hiking in the mountains last weekend.
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Hiking is a great way to enjoy nature.
1.
present participle of hike
:
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He was hiking up the steep trail when it started to rain.
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They spent the whole day hiking through the forest.