eat something up

Từ điển Oxford Advanced Learner 8th

▪ I. ˌeat sthˈup derived
to use sth in large quantities
•Legal costs had eaten up all the savings she had.
Main entry: ↑eat_derived
 
▪ II. ˌeat ˈup | ˌeat sthˈup derived
to eat all of sth
• Eat up! We've got to go out soon.
•Come on. Eat up your potatoes.
Main entry: ↑eat_derived