give somebody the nod

Từ điển Oxford Advanced Learner 8th

give sb/sth the ˈnod idiom
(informal)
1. to give permission for sth; to agree to sth
•We've been given the nod to expand the business.
•I hope he'll give the nod to the plan.
2. to choose sb for sth
Main entry: ↑nod_idiom