How many letters does the top answer for “a very large pot that is used for boiling” have?

The most common answer is caldron (7 letters).

Crossword clue: a very large pot that is used for boiling

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

caldron 7 letters wn-def

a very large pot that is used for boiling

cauldron 8 letters wn-def

a very large pot that is used for boiling

(used informally) very large 50% similar → banging, humongous, thumping