How many letters does the top answer for “armor plate that protects the chest; the front part of a cuirass” have?

The most common answer is breastplate (11 letters).

Crossword clue: armor plate that protects the chest; the front part of a cuirass

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

breastplate 11 letters wn-def

armor plate that protects the chest; the front part of a cuirass

egis 4 letters wn-def

armor plate that protects the chest; the front part of a cuirass