How many letters does the top answer for “a tube through which darts can be shot by blowing” have?

The most common answer is blowgun (7 letters).

Crossword clue: a tube through which darts can be shot by blowing

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

blowgun 7 letters wn-def

a tube through which darts can be shot by blowing

blowpipe 8 letters wn-def

a tube through which darts can be shot by blowing

blowtube 8 letters wn-def

a tube through which darts can be shot by blowing