n. 1.footwear that covers the whole foot and lower leg 2.British term for the luggage compartment in a car 3.the swift release of a store of affective force 4.protective casing for something that resembles a leg 5.an instrument of torture that is used to crush the foot and leg 6.the act of delivering a blow with the foot boot v. 1.kick 2.cause to load (an operating system) and start the initial processes