cutting edge

Từ điển Oxford Advanced Learner 8th

ˌcutting ˈedge [cutting edge cutting edges] BrE NAmE noun singular
1. the ~ (of sth) the newest, most advanced stage in the development of sth
•working at the cutting edge of computer technology
compare ↑bleeding edge
2. an aspect of sth that gives it an advantage
•We're relying on him to give the team a cutting edge.