stable o` fillies Share definition Flag (noun) An informal group of single, available, and willing women which can be drawn upon in times of need. To avoid a sausage fest, John brought his stable o` fillies to the party. stable o` fillies by Patrick Roux September 22, 2008 0 0 Get merch Get the stable o` fillies mug. Buy Now — $32.95 See more merch