Pillowcate Share definition Flag The act of suffocating someone with a pillow. Noun - pillowcation. Adjective - pillowcatative. “I am going to pillowcate him in his sleep” Pillowcate by Goosemate February 27, 2019 0 0 Get merch Get the Pillowcate mug. Buy Now — $32.95 See more merch