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1.
A woman that is one level above a jump off but always a step below the wife, wifey, girlfriend. A side bitch must know her part. She does not get holiday's, birthday's (other than her own). While he may meet your family. You will never meet his.
A side bitch is a woman who will have sex on Feb. 1-13 and spend Valentines day alone.
by class09 January 30, 2009
 
2.
like a sidekick to a complete bitch.
She's like Leah's total SIDEBITCH.
by XxLOL_iLY123xX February 01, 2009