nutbra Share definition Flag A device like a bra, used to hold up saggy, old men's nuts. "I bought my Grandpa Jerold a nutbra for Christmas so that his nuts would stop dropping in the toilet everytime he tried to pee!" nutbra by BrieandKerrie December 10, 2008 0 0 Get merch Get the nutbra mug. Buy Now — $32.95 See more merch