lionheart Share definition Flag 1. A troll 2. The guy that pwned the gamefaqs mods 3. To be really annoying 1. That guy is such a lionheart 2. Those mods got Lionheart'd 3. Thay user is so Lionheart! lionheart by The original Gangsta December 15, 2003 0 0 Get merch Get the lionheart mug. Buy Now — $32.95 See more merch