Definition of downhilling in English:
downhilling
noun
The action of travelling at high speed down a steep slope on a toboggan, skis, a mountain bike, etc.; this as a recreation or sport; downhill racing.
Pronunciation
downhilling
/ˌdaʊnˈhɪlɪŋ/ /ˈdaʊnhɪlɪŋ/Origin
Late 19th century; earliest use found in Bismarck (Dakota Territory) Daily Tribune. From downhill + -ing.
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