Herc Share definition Flag Coming from the very muscular and brave Greek god, Hercules, A herc means someone who is very courageous and strong. “Damn, David saved that puppy from falling from a cliff, he’s such a herc.” Herc by Somyy December 31, 2019 0 0 Get merch Get the Herc mug. Buy Now — $32.95 See more merch