1
general::
Phrase(s): round something off
to change a number to the next higher or lower whole number. (See also round off to something.) • You should round 8.122 off. • I rounded off 8.789 to 9., Phrase(s): round something off (with something)
to finish something with something; to complement something with something. (See also round something off.) • We rounded the meal off with a fine cognac. • We rounded off the meal with a sinful dessert.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
1. Change a number to the closest whole number or the closest multiple of 10. For example, Rounding it off, I expect the new school addition will cost a million dollars. 2. Also, round out. Finish, complete, especially in a neat or perfect way. For example, They rounded off the dinner with a magnificent liqueur, or That stamp rounded out his collection. [Mid-1700s; variant, mid-1800s] Also see ROUND OUT.
American Heritage Idioms