A group of carts left in a certain area that is not the designated spot for carts to be returned to. This is found in places with many people like supermarkets.
Person 1: We're going to be late to the party.
Person 2: Don't take the cart all the way back to the store. Just push it in the cart cluster.
Person 2: Don't take the cart all the way back to the store. Just push it in the cart cluster.
by Manginacus January 5, 2011