liquor lock Share definition Flag A lock that locks up a liquor cabinet in a house so the kids/teens can't get to the liquor. The kids had a big house party while we were away for the weekend and they got into the liquor. We need a liquor lock! liquor lock by Teratogen March 6, 2012 0 0 Get merch Get the liquor lock mug. Buy Now — $32.95 See more merch