See also:

https://digicoll.library.wisc.edu/IcelOnline/Search.TEId.html - A different Icelandic-English dictionary

https://islenskordabok.arnastofnun.is/ - Monolingual dictionary

https://polska.arnastofnun.is/is/ - Icelandic-Polish

https://deis.dict.cc/ - Icelandic<->German