outflow

Noun

• a natural flow of ground water

• the process of flowing out

• the discharge of a fluid from some container
  • they tried to stop the escape of gas from the damaged pipe
    
  • he had to clean up the leak
    

Related words

• Synonyms: 
  spring , fountain , outpouring , natural spring , effluence , efflux , escape , leak , leakage
• Antonyms: 
  inflow , influx