n ( BrE )
an informal market, often in a field, where people sell things from the backs of their cars or from tables. People usually sell books, clothes, children’s toys, etc. which they no longer want, but some people use the sales to sell stolen goods or illegally copied music, videos or computer programs. Car boot sales are very popular in Britain and take place regularly in many parts of the country:
The tools didn’t cost much – I got them at a car boot sale.
Compare garage sale .