Car boot sales are outdoor markets where people sell their used items from the trunk (or "boot") of their cars. The term comes from the British English use of "car boot" to refer to the luggage compartment at the back of a car, which is called a "trunk" in American English. These sales are popular in many countries and provide an opportunity for people to buy and sell second-hand items, often including clothing, furniture, books, records, and other collectibles.