höfrungur

Etymology
Earliest attested in 16th century. No cognates in related languages, Faroese has already adopted dolfin. Asgeir Blöndal Magnusson estimates correlation with -hafur (Old English hæfer, Latin caper) comparing the leaps of the dolphin to those of the goat. Doubtful. Perhaps simply from haf ("sea") and ungur, that is, Hefring, a Norwegian mountain butting into the sea; and Hefring, daughter of Ægir the sea spirit.

Noun

 * 1) dolphin; specifically the common dolphin