Английский словарь американских идиом - weigh on

or weigh upon {v.} 1. To be a weight or pressure on; be heavy on. * /The pack weighed heavily on the soldier's back./ 2. To make sad or worried; trouble; disturb; upset. * /Sadness weighed on Mary's heart when her kitten died./ * /John's wrongdoing weighed upon his conscience./ * /The teacher's advice weighed upon Tom's mind./ 3. To be a burden to. * /His guilt weighed heavily upon him./