What does "snowfall" mean?

An instance of falling of snow.

What is a synonym for "snowfall"?

Common synonyms include: avalanche, blizzard, crystal, driven snow, flake, flurry.

/ˈsnoʊfɔːl/ noun

noun ·Uncommon ·Advanced level

Noun

1
An instance of falling of snow. countable, uncountable
"There has been snowfall every day this week."
2
precipitation falling from clouds in the form of ice crystals wordnet
3
The amount of snow that falls on one occasion. countable, uncountable
"London recorded a snowfall of 10 centimetres last night."

"The train was delayed because of heavy snowfall."

From snow + fall.