Third-person singular simple present indicative form of avalanche.(verb)
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Use "avalanches" in a sentence
"How many Sherpas and climbers have died in avalanches, falls and from oxygen deprivation?"
"The myth of manmade GW is like many other ideological 'avalanches' - it starts as a small snowball rolling down a political hill and eventually gathers such size and momentum that most will consequently leap aside in terror."
"Just in case you're getting a little concerned, given the series of recent deaths from avalanches, that is 'walking' we're doing, at sensible heights, not mountain climbing."