Swim Trunks Share definition Flag Shorts for swimming/water activities. Primarily worn by males. Also refered to simply as trunks. "Boys, put on your swim trunks; we're heading to the outdoor pool this afternoon." Swim Trunks by David Robson June 26, 2006 0 0 Get merch Get the Swim Trunks mug. Buy Now — $32.95 See more merch
