crown jewels

plural noun

1. the jewellery, including the regalia, used by a sovereign on a state occasion

Idioms and Phrases

A prized possession or asset, as in The Iliad and Odyssey are the crown jewels of ancient literature , or The software products are the company's crown jewels . This usage transfers the value of royal jewels to some other object. [Late 1800s]

Also, family jewels . The male genitals, especially the testicles. For example, She gave the would-be mugger a hard kick in the family jewels . A slang euphemism, the term dates from the 1970s, and the variant from the early 1900s.

Related Words

• headband 
• headdress