Focaccia Share definition Flag noun; a delicious flat bread topped with spices (such as basil or rosemary) and other products (garlic, olive oil). Mmm...I could go for some delicious focaccia right now. Focaccia by Cluck Cluck April 1, 2007 0 0 Get merch Get the Focaccia mug. Buy Now — $32.95 See more merch