Keep watch on.
The idiom "keep an eye out for" refers to watching for something or someone. An example of a sentence using the idiom would be: Jeff should be arriving soon, so keep an eye out for him.
It is just an idiom and has no history.
About 400 BC in England , a
The image is of you pointing an eye at something or someone. It means to watch carefully.
spying or looking someone all the time
That phrase must be an idiom, because I can't understand what it means."It's raining cats and dogs" is an idiom for "it's raining really hard.""I am learning about idioms in English class."Timmy was the apple of my eye".This sentence is an example of an idiom.
An excellent expression. To keep an eye, or to keep an eye on things means to maintain a watchful eye. You monitor what is happening with an appropriate zeal to the occasion. Another idiom would be, to keep an eye peeled. It means you are watching and protecting something, or someone.
No, the idiom is "turned a blind eye" as in "she turned a blind eye to his suffering." You don't change an idiom around or you lose the meaning.
No.
"Watch your back" means "Look out for what might be behind you." "I'll watch your back" means "Don't worry about what might be behind you, I'll take care of that."
So you can keep an eye out for potential bias.
Yes