How many letters does the top answer for “see jack, 8 (c).” have?

The most common answer is merou (5 letters).

Crossword clue: see jack, 8 (c).

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

merou 5 letters web-def

See Jack, 8 (c).

jack-by-the-hedge. see under jack. 50% similar → saucealone

see jack-with-a-lantern, under 2d jack. 50% similar → jacklantern