This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Sports Basic or intermediate climbing carried out on relatively small rocks that can be traversed without great risk of bodily harm in case of a fall.

n. Climbing, without ropes, on large boulders or boulder-sized objects.

v. Present participle of boulder.

"Instead I see the province promoting "bouldering" — think rock-climbing, but smaller — and such oddball fare as the Festival of Extraordinary Teapots."