diadems

/D AY1 AH0 D EH0 M Z/
noun
  1. 1

    An ornamental headband worn as a badge of royalty.

  2. 2

    A crown.

  3. 3

    Regal power; sovereignty; empireโ€”considered as symbolized by the crown.

  4. 4

    An arch rising from the rim of a crown (rarely also of a coronet), and uniting with others over its centre.

verb
  1. 1

    To adorn with a diadem; to crown.

Source: https://en.wiktionary.org/wiki/diadem, https://en.wiktionary.org/wiki/diadems