What is Longhair?
1.
A man -or- woman with longer-than-average hair.
My mom is really proud of me for remaining a longhair despite the current bobbed-and-layered hairstyle trend.
See
2.
A pre- 1950's term, referring to a man who enjoys or plays classical music. Typically these men had longish hair, longer than the clean-cut men of that era.
Look Doris, that cellist is such a longhair. He is a swell fellow, I'd like to have him over for dinner.
See
3.
A man with long hair, especially a hippie.
That crazy, old longhair smokes a lot of pot.
See