To look out for something is to watch carefully in order to notice it. Look out for the turning, look out for each other.
It has two senses that pull apart, since looking out for a hazard is watchfulness and looking out for a person is care. Both share the idea of attention paid on purpose.
1phraselook out forTo watch carefully in order to notice something.
“Look out for a red door on the left.”
look out for is a phrase.
Practised in Phrasal Verbs