COVER UP

{v.}, {informal} 1. To hide something wrong or bad from attention. * /The spy covered up his picture-taking by pretending to be just a tourist./ * /A crooked banker tried to cover up his stealing some of the bank's money by starting a fire to destroy the records./ Compare: COVER ONE'S TRACKS(2). 2. In boxing: To guard your head and body with your gloves, arms, and shoulders. * /Jimmy's father told him to cover up and protect his chin when he boxed./ 3. To protect someone else from blame or punishment; protect someone with a lie or alibi. - Often used with "for". * /The teacher wanted to know who broke the window and told the boys not to try to cover up for anyone./ * /The burglar's friend covered up for him by saying that he was at his home when the robbery occurred./