look out

verb

To be vigilant and aware often as an imperative to alert a person to danger.
“While you're in the city center, look out for the dodgy street vendors.”
“Thinks I to myself, “Sol, you're run off your course again. This is a rich man's summer‘cottage’ and if you don't look out there's likely to be some nice, lively dog taking an interest in your underpinning.””
To find by looking: to hunt out.
“Morgan pulled a Greek lexicon toward him (he used a Greek-German), to look out a word, instead of asking it of Pemberton.”
“Then she straightened the kitchen, lit the lamp, mended the fire, looked out the washing for the next day, and put it to soak.”
To be facing.
“A spacious room that looks out on the sea.”
Used other than figuratively or idiomatically: see look, out.
“On the morning of the eighth day, he found himself looking out across the river.”
Ellipsis of look out for (someone)
“Hey man, I know it costs four dollars but I only have three. Can you please look out?”
To be supportive or protective of someone.
“You better look out for your little brother.”