grot otter Share definition Flag A really nasty,butt ugly disgusting girl. Tranlates from afrikaans as cave otter. Mike:YOh dave check out that girl! Dave:What!You checking out grot otters is making me sick! grot otter by JahFire March 18, 2010 0 0 Get merch Get the grot otter mug. Buy Now — $32.95 See more merch