prince

Concise Oxford English Dictionary © 2008 Oxford University Press:
prince/prɪns/

▶noun

• 1 a son, grandson, or other close male relative of a monarch.

  ■ a male monarch of a small state, actually or nominally subject to a king or emperor.

  ■ (in some European countries) a nobleman, usually ranking next below a duke.

• 2 (prince of or among) a man or thing pre-eminent in a particular sphere or group.

– phrases
prince of the blood a prince by right of royal descent.

– derivatives
princedom noun,
princelike adjective.

– origin ME: via OFr. from L. princeps, princip- ‘first, chief, sovereign’, from primus ‘first’ + capere ‘take’.