round something ↔ off phrasal verb ( see also ↑ round )
1 . to do something as a way of ending an event, performance etc in a suitable or satisfactory way SYN finish
round something ↔ off with
You can round off the evening with a visit to the nightclub.
She rounded off the meal with some cheese.
It was the perfect way to round off the season.
2 . to take the sharp or rough edges off something:
Round off the corners with a pair of scissors.
3 . to change an exact figure to the nearest whole number
round something ↔ off to
Prices are rounded off to the nearest dollar.