noun, noun or participle which takes 'suru', transitive verb
keeping a close watch on both sides; keeping an eye on two things at once
Often used in strategic or competitive contexts where one must monitor two opposing parties or two separate matters simultaneously.
彼は両睨みを利かせて、二つのプロジェクトを同時に監視している。
He keeps a close watch on both projects at the same time.
交渉では、常に相手側と競合他社を両睨みしておく必要がある。
In negotiations, you must always keep an eye on both the other party and your competitors.