step-second-cousin Share definition Flag 1- Stepgrandpibling's grandchild. 2- Grandpibling's stepgrandchild. 3- Step-2C. My step-second-cousin is a good person. step-second-cousin by User655 July 25, 2021 0 0 Get merch Get the step-second-cousin mug. Buy Now — $32.95 See more merch