Where does “burstígull” come from?

burstígull (Old Norse) comes from Old Norse ígull, from Proto-Germanic igilaz, from Proto-Indo-European h₁eǵʰis — hedgehog, hedgehog-like animals.

Ancestry of “burstígull”, step by step

StepLanguageWordMeaning
1Old Norseígullsea-urchin
2Proto-Germanicigilazhedgehog
3Proto-Indo-Europeanh₁eǵʰishedgehog, hedgehog-like animals
Every word from Proto-Indo-European h₁eǵʰis →Every word from Proto-Germanic igilaz →Every word from Old Norse ígull →