boardinghouse boar·ding·house US/ˈbɔrdɪˌŋhaʊs/ uncommon noun 1. a private house that provides accommodations and meals for paying guests Synonymsboarding house Related words Broader terms house Narrower terms bed and breakfast WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.