n. The act of freezing; congelation of fluids; formation of ice.n. That state or temperature of the air which occasions freezing or the congelation of water; severe cold or freezing weather.n. A covering of minute ice-needles formed from the atmosphere at night upon the ground and on exposed objects when they have cooled by radiation below the dew-point and the dew-point is below the freezing-point. Also called hoar frost, white frost, and rime.n. The state or condition of being frozen: said of the surface of the ground: as, the frost extends to a depth of ten inches.n. Figuratively, coldness or severity of manner or feeling.To injure by frost.To cover with hoar frost; hence, to cover with something resembling hoar frost, as cake with a crust of white sugar; give the appearance or color of hoar frost to; lay on like hoar frost.To sharpen the front and hind parts of (a horse's shoes): also applied elliptically to the horse itself. It is done to enable the horse to travel on ice or frozen roads.To freeze; hence, to become like frost through alteration of structure, as glass.n. A spiked sole put on shoes to enable one to walk on ice without slipping.