The term REGAL HEADPIECE is a combination of two words, ARAITDNOMAID (12 letters) and TIARA (5 letters). ARAITDNOMAID is an anagram for DIADEMATRON, which is a type of crown or headpiece worn by royalty. A TIARA is a type of headpiece that is usually made of precious metals and jewels and is worn by women as a symbol of status and power. Together, these two words form the term REGAL HEADPIECE, which refers to a type of crown or headpiece worn by royalty.