How many letters does the top answer for “faucet consisting of a rotating device for regulating flow of a liquid” have?

The most common answer is stopcock (8 letters).

Crossword clue: faucet consisting of a rotating device for regulating flow of a liquid

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

stopcock 8 letters wn-def

faucet consisting of a rotating device for regulating flow of a liquid

turncock 8 letters wn-def

faucet consisting of a rotating device for regulating flow of a liquid