Cuch Share definition Flag 1. Slang word for Vagina. 2. When two lesbians 69 eachother. 1. She let me fell her cuch the other day. 2. I was watching TV and I found a chanal woth two girls cuchin it out. Cuch by JKD February 24, 2003 0 0 Get merch Get the Cuch mug. Buy Now — $32.95 See more merch