pump one's fist verb1 •To thrust forward one's fist, as in celebration. formspumped one's fist · pumping one's fist · pumps one's fist
pump someone's fist verb2 •(informal) To perform a fist bump with someone. •(slang, vulgar) To thrust one's penis into another person's open fist. formspumped someone's fist · pumping someone's fist · pumps someone's fist
