Diminutive of names beginning with the Slavic element jarŭ meaning "fierce, energetic", such as Jarosław or Jaroslav. It is sometimes used independently.
Rein
Gender:Masculine
Usage: Frisian, Dutch, Estonian
Pronounced:RAYN(Frisian, Dutch)
Originally a short form of Germanic names beginning with the element regin meaning "advice, counsel, decision" (Proto-Germanic *raginą).