► at three o'clock/seven thirty etc on the dot (=at exactly 3:00/7:30 etc)
Mr Green arrived at six on the dot. ► a quarter of seven
It’s a quarter of seven (=6.45). ► the seven deadly sins (=seven bad feelings or desires, in the Christian religion, for example greed or too much pride)
► a five-figure/six-figure/seven-figure etc sum (=an amount in the ten thousands, hundred thousands etc)· The newspaper paid a six-figure sum for the photograph of the princess.