chonu Share definition Flag a chonu is a word used to describe a mysterious lost person, someone that has had things happen in his/her life that have ended up ruining it. Greg: check out the chonu over there, he lost his mother last week. Jane: very sad indeed. chonu by kerslick January 30, 2009 0 0 Get merch Get the chonu mug. Buy Now — $32.95 See more merch