A sale of goods, typically unwanted household items, conducted in the driveway of a house, with the intention of selling to neighbours or passers-by.
A sale of used household goods held on the seller's own premises.
The state that the participant (skier, snowboarder, skateboarder, cyclist, etc.) and their equipment is in after a nasty crash, whereupon they and their equipment is laid out across the ground like pieces of a yard sale.