castle gazer Share definition Flag (n) Noun: A male who looks at another male's genitals. "Dude, I was in the can during the 2nd intermission, and the guy at the urinal beside me was a total castle gazer!" castle gazer by bryska February 12, 2006 0 0 Get merch Get the castle gazer mug. Buy Now — $32.95 See more merch