Jafnhár [Equally high]. A name of Odin. Evenhigh. Jafnhaar.
Jálkr. A name of Odin (Jack the Giant-killer?). Jalk.
Járnsaxa [Iron-chopper]. One of Heimdel’s nine giant mothers. Jarnsaxa.
Járnviðr [Iron-wood]. A wood east of Midgard, peopled by giantesses called Jarnvids. This wood had iron leaves. Jarnvid.
Járnviðiur. The giantesses in the Iron-wood. Jarnvids.
Jörd. Wife of Odin and mother of Thor. Earth. Jord.
Jötunn [Anglo-Sax. eoten]. A giant. The giants were the earliest created beings. Tho gods question them in regard to Balder. Thor frequently contends with them. Famous giants are: Ymer, Hymer, Hrungner, Orvandel, Gymer, Skrymer, Vafthrudner and Thjasse. Giant.
Jötunheimar (plural). The Utgaard; the home of the giants in the outermost parts of the earth. Jotunheim.
K
Kerlaugar (plural). Two rivers which Thor every day must cross. Kerlaug.