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f
ie
rsn
N (fem, i-stem)
heel
, calx
Source:
Kroonen 2013
:137,
https://en.wiktionary.org/wiki/fiersn#Old_English
originates from: PGmc
*fersnō-
"heel" (fersnō-
>
fersnū
>
fersnu
>
feorsnu
>
feorsn) through pgmc-to-oe – < *fersni-
(source:
Kroonen 2013
:137)