beaver
From Proto-Italic *febros, from Proto-Indo-European *bʰébʰrus. Doublet of beber. The noun was changed to a second declension noun, displacing the original fourth declension pattern which would have yielded *fibrus, *fibrūs.
Ćwicz mówienie i zapamiętywanie " fiber " i wielu innych słów i zdań z łaciński .