From Longman Dictionary of Contemporary Englishlook out for somebody/something phrasal verb1 LOOK FORto pay attention to what is happening around you, so that you will notice a particular person or thing if you see them → lookout Look out for your Aunt while you’re at the station. He’s looking out for a nice apartment downtown.2 SELFISHto try to make sure that someone is treated well My older brother always looked out for me when we were kids.look out for yourself/number one (=think only of the advantages you can get for yourself) → look→ See Verb table
Examples from the Corpus
look out for • I was provided with a list of about 100 words to look out for.• There are other things I look out for.• It turns out he was just looking out for himself.• We rode a little, walked, talked, played cards in the evening and I looked out for Poppy.• To give you an idea of what to look out for, take a look at the photograph opposite.• They have a wide view to help them look out for the hunters.• The student should look out for them and make a mental note of their fascinating and beautiful effect.• Political power is when your friends look out for you without you having to ask.look out for yourself/number one• We manoeuvre in the world constantly looking out for Number One. 