vag shield Share definition Flag The Female version of a cock block. When a woman is prevented from having sex by another individual. Dude, Paige got vag-shielded last night. Dude, Amy is such a vag shield. vag shield by msmillerisdumb April 3, 2009 0 0 Get merch Get the vag shield mug. Buy Now — $32.95 See more merch