simple past tense and past participle of smog

(organic chemistry) The pseudohalogen (CN)₂; a colourless, poisonous gas used as a rocket propellant, an insecticide and in chemical warfare. / (chemistry) The radical -CN.

(dialectal, archaic or poetic) About to die; doomed; on the verge of sudden or violent death. / (obsolete) Dying; dead.

The act by which something is crimped.