Snashack Share definition Flag A woman's vagina and/or slit.Commonly used with the word snatch. The woman's snatch has a separate snashack for the black.He shalacked in her snashack. Snashack by TommyJonny April 9, 2010 0 0 Get merch Get the Snashack mug. Buy Now — $32.95 See more merch