The Simple English Wikipedia has an article on: Pus Pronunciation enPR: pŭs, IPA (key): /pʌs/ Audio (UK)(file) Noun Singular pus Plural none Pus is a thick yellowish substance that is made up of dead white blood cells and dead bacteria. It is normally found in regions of bacterial infection.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads