From Longman Dictionary of Contemporary Englishshooshoo1 /ʃuː/ interjection LEAVE A PLACEused to tell an animal or a child to go awayshooshoo2 verb [transitive always + adverb/preposition] informal LEAVE A PLACEto make an animal or a child go away, especially because they are annoying youshoo somebody away/out etc He shooed the kids out of the kitchen.→ See Verb table
Examples from the Corpus
shoo• Soon there would be the little clutch of spectators, the curious children shooed away by the adults, the Press photographers.• Just this week, the City Council decided to use the police like a big swinging tail to shoo away insects.• I come outside and shoo Grandpa off the mower again.• He prescribed a painkiller and suggested she keep busy, then he shooed her away and chided her for malingering.• She shooed him, and he skipped away, but not without hooting behind his hand.• These were the days when rock was being shooed out in disgrace, a lumpen confusion of scratched armpits and muddled motives.• Johnny knew that was wrong, and with his stick, he tried to shoo the goats out.Origin shoo1 (1400-1500) Natural sound 