- Füllen (dated)
From Middle High German vole, fole, from Old High German folo, from Proto-Germanic *fulô. Old High German fulīn (whence modern Füllen) is originally a diminutive of the same root. The development by which the two words were perceived as mere phonetic variants started in Middle Low German volen vs. völlen. Thereby the word became neuter and took the nominative ending -en. Cognate with Dutch veulen.
Fohlen n (genitive Fohlens, plural Fohlen)
- “Fohlen” in Duden online