Gwardino Share definition Flag How to say: gwar-dino Something that someone randomly blurts out, out of no where. Girl: Yeah so i was at the bus stop today and... Boy: GWARDINOOOOO! girl: ...that was uncalled for. Gwardino by Rawri'malion January 13, 2009 0 0 Get merch Get the Gwardino mug. Buy Now — $32.95 See more merch