Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
plastron is a noun meaning "the ornamental front of a woman's bodice or shirt". It carries 5 recorded senses.
the ornamental front of a woman's bodice or shirt
the front of man's dress shirt
a metal breastplate that was worn under a coat of mail
a large pad worn by a fencer to protect the chest
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for plastron come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.