means Exposed to or shaped by strong winds, often describing tousled hair, bare landscapes, or anything left ruffled and disheveled by gusts.

from A transparent compound of "wind" and "swept" — the past participle of "sweep." "Wind" traces back to Old English "wind," from a Germanic root tied to the idea of blowing, a cousin of Latin "ventus." "Sweep" comes from Old English "swapan," to move or rush along. So the word does exactly what it says: it pictures the wind as a broom dragged across hair, hills, and moors, leaving everything brushed in one direction whether it liked it or not.