Laguz (law-gooze) is the fifth rune of the third aett, and the twenty-first rune overall. Here, the feminine mysteries turn inwards.
Nerthus was an old goddess who lived on a lake. A sorceress, on a pitch black lake. In the lake, one could scry about love. If you pass the lake to her island, she would bear very fertile gifts.
Laguz is associated with sex magic, as well as the tides. It can represent tides going out or coming in, depending on if it is upright or inverted. It also represents reciprocal affection.