prince 
(prĭns)
(prĭns)n.
1. A male member of a royal family other than the monarch, especially a son of the monarch.
2.
a. A man who is a ruler of a principality.
b. A hereditary male ruler; a king.
3. A nobleman of varying status or rank.
4. An outstanding man, especially in a particular group or class: a merchant prince.
[Middle English, from Old French, from Latin prīnceps; see per1 in the Appendix of Indo-European roots.]
princeship′ n.