How many letters does the top answer for “a waterproof overshoe that protects shoes from water or snow” have?

The most common answer is galosh (6 letters).

Crossword clue: a waterproof overshoe that protects shoes from water or snow

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

galosh 6 letters wn-def

a waterproof overshoe that protects shoes from water or snow

golosh 6 letters wn-def

a waterproof overshoe that protects shoes from water or snow

gumshoe 7 letters wn-def

a waterproof overshoe that protects shoes from water or snow