Definition of antifreezes:
(n) :
(automotive) Automotive antifreeze, a solution of ethylene glycol, used as an additive to water or replacement for water, in the radiators of motorcars.
(n) :
A substance, such as glycol, used to lower the freezing point of water.
(n) :
(aviation) A deicer, a heated glycol solution used to remove ice from the aerodynamic surfaces of airplanes, and prevent icing while on the tarmac.