An individual talented in all spheres of human endeavour, including but not limited to sports, art, science, war, philosophy and music.
Some renaissance men of great repute include Leonardo Da Vinci and Goethe
If you try and think of examples of Renaissance men, remember that it is not enough that they have brilliant minds (hence Einstein is out), nor is it enough that they are fine sportsmen (hence no Carl Lewis) or are well hung and virile (so no Shergar) and nor is it sufficient that they are musically gifted (so we omit Beethoven). It is a requirement that they are talented in ALL these areas.
I myself am a renaissance man, as I am a fine athelete, an excellent scholar, have an ear for music a talent for art and a way with the ladies.