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English definition of “tiara”

tiara

noun [C] uk   /tiˈɑː.rə/ us    /-ˈer.ə/
a piece of metal in the shape of half a circle decorated with jewels (= precious stones) that is worn on the head by a woman, especially a queen, etc., at very formal social occasionsJewelleryCeremonial clothes and objects
(Definition of tiara from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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