How many letters does the top answer for “a pan for holding burning coals.” have?

The most common answer is brasier (7 letters).

Crossword clue: a pan for holding burning coals.

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

brasier 7 letters web-def

large metal container in which coal or charcoal is burned; warms people who must stay outside for long times

brazier 7 letters web-def

large metal container in which coal or charcoal is burned; warms people who must stay outside for long times