מַגֶּבֶת
This is a useful word if you’re stuck in a sub-par hotel and realize there’s nothing with which to dry yourself after a shower.
מגבת
comes from the root נ.ג.ב
meaning to wipe.
For example:
יש לך מגבת ספייר?
Do you (a male) have an extra towel?
A related word is להתנגב
– to dry oneself (with a towel).