From Longman Dictionary of Contemporary Englishlollipop ladyˈlollipop ˌlady, lollipop man noun [countable] British EnglishSES someone whose job is to help children cross a road safely on their way to school
Examples from the Corpus
lollipop lady• He says the crossing patrol has poor visibility because of parked cars and the lollipop lady has to weave in between stationary vehicles. 