plural of crown jewel / (literally) The jewelry that accompany the office of rulership in a monarchy, i.e. crown, scepter, signet ring, etc. / (slang) The male genitalia.

The historic royal regalia of a state.

A prized possession or asset, originally one making up part of the royal regalia. / (business) A valuable part of a company, especially one that is sought by another in a hostile takeover.