passar pano

Etymology
lit. 'to pass [a] cloth'.

Verb

 * 1)  to rub a cloth (often wet with water or cleaning products) over a surface in order to clean it
 * 2)  to minimize or downplay someone's misconduct or crimes, to "clean" someone's reputation
 * 1)  to minimize or downplay someone's misconduct or crimes, to "clean" someone's reputation