Frisii

Noun

 * 1)  A tribe of Northern Germany who dwelt between the rivers Rhine and Ems.

Etymology
Possibly named for their curly hair, from, which might possibly be from , which Pokorny says means to burn as well as to freeze (see 🇨🇬). If valid, this could derive from the warping of objects under temperature extremes.

Proper noun

 * 1) A tribe of Northern Germany who dwelt between the rivers Rhine and Ems.