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2.
A girl or girls that scout out/seek a guy like groupies. They are always watching him, and dig his style.
Tom: Girl forget about the sideline chicks, ain't nothin gonna interfere wit our relationship.
by Big-T-58 October 22, 2006
 
1.
a side line chick is a female who is dating a male who is in a relationship
-terricka from candy girls: "the groupie knows bout da jump-off, da jump-off knows bout da side line and the side line knows bout the main chick

side line chick
by sbwild88 September 23, 2009
 
3.
A girl or girls that scout out/seek a guy like groupies. They are always watching him, and dig his style.
Tom: Girl forget about the sideline chicks, ain't nothin gonna interfere wit our relationship.
by Big-T-58 October 22, 2006