Interlace (art)

In the visual arts, interlace is a decorative element found in  medieval art. In interlace, bands or portions of other motifs are looped, braided, and knotted in complex geometric patterns, often to fill a space. Interlacing is common in the Migration period art of Northern Europe, especially in the Insular art of the British Isles and Norse art of the Early Middle Ages and in Islamic art.