Proto-Germanic *jekulaz

→ English ickle (mention)

→ English eckle (mention)

→ Old English gicel (mention)

→ Middle English ikil (inherited)

→ Faroese jøkul (derived)

→ Icelandic jökull (derived)

→ German Low German Jökel (inherited)

→ Old Norse jǫkull (inherited)

→ Saterland Frisian Juukel (derived)