The special clothes, jewels, or other items worn by a person of high rank or office, especially a monarch; impressive outfit or costume.
From Medieval Latin 'regalia' meaning 'royal things', derived from Latin 'rex' meaning 'king'. The word refers to symbols of royalty and authority.
The British Crown Jewels are regalia so valuable that they're kept under 24/7 armed guard in the Tower of London, but the real power they held was symbolic—they convinced people to obey.
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