The Collaborative International Dictionary
Frore \Frore\, adv. [See Frorn.] Frostily. [Obs.]
The parching air
Burns frore, and cold performs the effect of fire.
--Milton.
Douglas Harper's Etymology Dictionary
"frosty, frozen," archaic (but found in poetry as late as Keats), c.1200, from Old English froren, past participle of freosan (see freeze (v.)). Related: Froren, which would be the title of the Anglo-Saxon version of Disney's movie.
Wiktionary
(context archaic English) Extremely cold; frozen. v
(context archaic rare English) (en-simple pastfreeze)
WordNet
adj. very cold; "whatever the evenings be--frosty and frore or warm and wet"
Usage examples of "frore".
There was a certain repellent quality about the frore autumn air, and something peculiarly shocking in the way in which desultory little winds would spring up in darkening streets to send the fallen leaves scurrying about in hateful, furtive whirlpools.
Progress was slow, and the Polar night gathered round us gradually, as we groped still onward and onward into that indigo and glimmering clime of frore, we now leaving off bed-coverings of reindeer-skin to take to sleeping-bags, eight of the dogs having died by the 25th of September, when we were experiencing 19_ of frost.
Behind and below was only a darkness to which the men dared not return, and all about was a mounting wind which seemed to sweep down in black, frore gusts from interstellar space.