Etymograph
>
Indo-European
>
Old English
>
Dictionary
> f
o
rst
frost
Source:
Kroonen 2013
:157
originates from: PGmc
*frusta-
"frost" (frusta-
>
frosta
>
frost
>
forst) through pgmc-to-oe
(source:
Kroonen 2013
:157)