From Longman Dictionary of Contemporary Englishdinner partyˈdinner ˌparty noun [countable] DLDFa social event when people are invited to someone’s house for an evening meal
Examples from the Corpus
dinner party• And for heaven's sake don't bring the subject up at a dinner party!• He is wholly charming, a person you would want next to you at a dinner party.• Not tonight, Harriet's dinner party, Meredith thought. 