means A strip or loop of material worn around the wrist, whether to absorb sweat, prove you paid for entry, display identification, or simply decorate.

from A plain English compound, stitching together "wrist" and "band." "Wrist" descends from Old English "wrist," tied to a root meaning "to turn or twist" — fitting for the joint that rotates the hand, possibly related to "writhe" and "wrest." "Band" is the older sense of a strip or tie used to bind, coming through Old French from a Germanic source related to "bind." Put together, it's literally the band that goes round the twisting joint.