From Longman Dictionary of Contemporary Englishpump out phrasal verb1 MAKEif something such as music, information, or a supply of products pumps out, or if someone pumps it out, a lot of it is produced Music pumped out from the loudspeakers.pump something ↔ out propaganda pumped out by the food industry2 pump something ↔ outMOVE something OR somebody to remove liquid from something, using a pump You’ll have to pump the boat out. → pump→ See Verb table