Definition of fountain noun from the Oxford Advanced American Dictionary

fountain

noun
/ˈfaʊntn/
 
 
1 a structure from which water is sent up into the air by a pump, used to decorate parks, etc. see also water fountain2 a strong flow of liquid or of another substance that is forced into the airThe amplifier exploded in a fountain of sparks.The shell exploded, sending a fountain of sand and grit into the air.3 a rich source or supply of somethingTourism is a fountain of wealth for the city.