(noun) used in the pick-up community when a woman acts in a bitchy way after being approached. An attactive woman is approached many times a day by guys wanting to attract her. In order to deter lesser men she puts on an act of being a bitch to sheild her from these guys
"Man, let me tell you. After a few negs her bitch sheild was down and she really opened up."
by EmeraldPUA May 20, 2006