Since the word fijn means “small, ” this was possibly a reference to the small size of the leaves and plants as well as to the slender timber growing in the area.
Tā kā vārds fijn nozīmē ’ mazs ’, šādu nosaukumu augājs, iespējams, ieguva šim apvidum raksturīgo nelielo, sīklapaino augu un tievstumbra koku dēļ.