double-edged

Từ điển Oxford Advanced Learner 8th

ˌdouble-ˈedged [double-edged] BrE NAmE adjective
1. (of a knife, etc.)having two cutting edges
•a double-edged blade/axe/dagger
2. (of a remark, comment, etc.)having two possible meanings
Syn: ↑ambiguous
3. having two different parts or uses, often parts that contrast with each other
•the double-edged quality of life in a small town— security and boredom
Idiom: ↑a double-edged sword