The patch of hair grown right under the lip. Any self-respecting stylish male has one.
Varies from the common soul patch in that instead of simply being a nondescript, unshaped patch, the soul bar is a carefully trimmed horizontal line composed of meticulously taken care of bristle extending directly below the lower lip.
Kid 1- Yo kid, look at Neesh Dawg flirt up them ladies. How does he do it?!
Kid 2-IT'S THE SOUL BARRR.