Word parts board + -er Pronunciation (AU) IPA (key): /ˈbɔədə/ (UK) IPA (key): /ˈbɔːdə/ (US) IPA (key): /ˈbɔrdɚ/ Audio (US)(file) Homophone: border Noun Singular boarder Plural boarders (countable) A boarder is a student who lives at his or her boarding school. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads