The Collaborative International Dictionary of English v.0.48:
Frore \Frore\, adv. [See Frorn.] Frostily. [Obs.] [1913 Webster] The parching air Burns frore, and cold performs the effect of fire. --Milton. [1913 Webster]WordNet (r) 3.0 (2006):
frore adj 1: very cold; "whatever the evenings be--frosty and frore or warm and wet"