the.com/snowbank

means A mounded pile of plowed or drifted snow, often tall enough to swallow a curb, a car bumper, or your ambition to park there.

from A straightforward compound — 'snow' plus 'bank,' the same 'bank' that gives you riverbank: a raised mound or edge of something. English has used 'bank' for mounds of earth, sand, or cloud since medieval times, so sliding snow into that slot was a small, natural step once winters and plows made snow pile up high enough to need its own word for the heap.