From Longman Dictionary of Contemporary Englishwatch (out) for something phrasal verbREADYto pay close attention in a particular situation because you are expecting something to happen or you want to avoid something bad She stepped outside to watch for the cab. What problems should I watch out for when buying an old house? → watch→ See Verb table
Examples from the Corpus
watch (out) for • They can keep their roster intact and watch for continued improvement from their young group as preparation for next season.• Beyond this opened a small glass-sided cubicle from which a senior clerk could watch for frivolity among the underlings.• I think he wants to keep watching for land.• Doyle watched for movement inside the cab, but saw none.• During follow-up examinations, we watch for signs of attachment and confidence. 