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rustre

noun
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rus·​tre | \ ˈrəstə(r) \
plural -s

Definition of rustre

1 heraldry : a lozenge pierced with a round opening to show the tincture of the field behind
2 : a metal scale of oval or lozenge shape used on medieval armor

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First Known Use of rustre

1664, in the meaning defined at sense 1

History and Etymology for rustre

French ruste, rustre

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“Rustre.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rustre. Accessed 6 Mar. 2021.

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