Abrade
Function: verb
Inflected Form(s): abrad·ed; abrad·ing
Etymology: Latin abradere to scrape off, from ab- + radere to scrape -- transitive verb
1 a : to rub or wear away especially by friction : ERODE b : to irritate or roughen by rubbing
2 : to wear down in spirit
It's your turn; please abrade this rock by rubbing it with your face.