Английский словарь американских идиом - get through one's head

{v. phr.} 1. To understand or believe. * /Jack couldn't get it through his head that his father wouldn't let him go to camp if his grades didn't improve./ * /At last Mary got it through her head that she had failed to pass the test./ 2. To make someone understand or believe. * /I'll get it through his head if it takes all night./