out ‧ flow /ˈaʊtfləʊ $ -floʊ/ BrE AmE noun [countable]
1 . when money, goods etc leave a bank, country etc
outflow of
the outflow of capital from the developed countries
2 . the flow of water or air from something
outflow of
an outflow of gas escaping from the main duct
the outflow valve