frost
1. frost \'fro.st\ n [ME, fr. OE; akin to OHG frost, OE fre-osan to freeze] 1a: the process of freezing 1b: the temperature that causes freezing 1c: a covering of minute ice crystals on a cold surface 2a: coldness of deportment or temperament 2b: FAILURE 2. frost vt 1a: to cover with or as if with frost; esp : to put icing on (cake ) 1b: to produce a fine-grained slightly roughened surface on (as metal or g lass) 2: to injure or kill (as plants) by frost : to become frosted : FREEZE