A crown is the emblem of St Louis, St Olaf, St Wenceslas, and other royal saints.
The expression the Crown is used for the reigning monarch representing a country's government, or the power or authority residing in the monarchy.
The word is recorded from Middle English, and comes ultimately (via Anglo-Norman French and Old French) from Latin corona ‘wreath, chaplet’.
Crown jewels the crown and other ornaments and jewellery worn or carried by the sovereign on certain state occasions; the phrase is first recorded in English in the 17th century, in Milton's Eikonoklastes (1649).
Crown of St Stephen the crown of the sovereigns of Hungary, which according to tradition was presented to St Stephen of Hungary by Pope Sylvester II.
crown of thorns the circlet of thorns with which Christ was crowned in mockery, as recounted in John 19:2. The crown of thorns is one of the Instruments of the Passion, and may be used figuratively to indicate undeserved humiliation and suffering.
See also no cross, no crown, triple crown.