be banging, etc. your head against a brick wall成語所屬單字brickbe banging, etc. your head against a brick wallbe banging, etc. your head against a brick wall — 慣用語慣用語1. To keep trying to do something that will never succeed.1.慣用語釋義徒勞無功To keep trying to do something that will never succeed.例句Mia felt she was banging her head against a brick wall.Is he still banging his head against a brick wall?