How many letters does the top answer for “a piece of metal covered by leather with a flexible handle; used for hitting people” have?

The most common answer is cosh (4 letters).

Crossword clue: a piece of metal covered by leather with a flexible handle; used for hitting people

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

cosh 4 letters wn-def

a piece of metal covered by leather with a flexible handle; used for hitting people

sap 3 letters wn-def

deplete