"plastron" in the noun sense
1. plastron
the ornamental front of a woman's bodice or shirt
2. plastron
the front of man's dress shirt
3. plastron
a metal breastplate that was worn under a coat of mail
4. plastron
a large pad worn by a fencer to protect the chest
5. plastron
zoology) the part of a turtle's shell forming its underside
Source: WordNet® (An amazing lexical database of English)
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