How many letters does the top answer for “a long tunic of chain mail formerly worn as defensive armor” have?

The most common answer is byrnie (6 letters).

Crossword clue: a long tunic of chain mail formerly worn as defensive armor

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

byrnie 6 letters wn-def

a long tunic of chain mail formerly worn as defensive armor

hauberk 7 letters wn-def

a long tunic of chain mail formerly worn as defensive armor