noun
breastplate
BREHST-playt
noun
1
A piece of armor that protects the chest.
"The knight's breastplate bore his family's crest."
2
A strap of horse tack that stops the saddle from sliding backward.
"She fitted a breastplate to keep the saddle from slipping on the steep trail."
How to Use Breastplate
Learner’s notesIn plain EnglishArmor (or riding gear) that covers or secures around the chest.
Word Forms
breastplates plural
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The knight's _____ bore his family's crest.
Etymology
From Middle English brestplate, a compound of breast and plate.