Meanings
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1
noun
a jeweled ornamental headpiece worn on formal occasions
The bride wore a small diamond tiara with her veil.
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2
noun
a high ceremonial crown, especially the historic three-tiered papal crown
The papal tiara is preserved in the museum's collection of ceremonial objects.
Thesaurus
Etymology
Through Latin tiara from Greek tiara, a word for a high eastern headdress, probably borrowed from an Iranian language. English later applied it to papal and jeweled ceremonial crowns.