A marksman who never misses.

(colloquial) A furiously vengeful disposition.

(US, baseball, historical, humorous) Synonym of Three-I League

(US, informal) To travel on an airplane all night.

(figuratively) Another person who will be able to provide a fresh outlook on an issue; an unbiased observer.

(Malaysia, Singapore, idiomatic) to look the other way, to deliberately ignore or overlook (a mistake or transgression).

Drunk.

In one's plain view. / (especially of a surprising or negative event) Experienced viscerally but with a degree of detachment, often due to being powerless to change the circumstances.

simple past tense of keep an eye out

present participle of keep an eye peeled