How many letters does the top answer for “to bruise or make flat by a fall.” have?

The most common answer is squat (5 letters).

Crossword clue: to bruise or make flat by a fall.

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

squat 5 letters web-def

sit on one's heels