crown jewels

A prized possession or asset, originally one making up part of the royal regalia.

A valuable part of a company, especially one that is sought by another in a hostile takeover.

The jewelry that accompany the office of rulership in a monarchy, i.e. crown, scepter, signet ring, etc.

“The crown jewels in the United Kingdom are heavily guarded and anyone trying to steal them will certainly have a hard time.”

The male genitalia.

“The whole crowd cringed as he got kicked in his crown jewels.”