How many letters does the top answer for “a liturgical headdress worn by bishops on formal occasions” have?

The most common answer is miter (5 letters).

Crossword clue: a liturgical headdress worn by bishops on formal occasions

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

miter 5 letters wn-def

bevel the edges of, to make a miter joint

mitre 5 letters wn-def

a liturgical headdress worn by bishops on formal occasions