Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Household, Buildingdes resdes res /ˌdez ˈrez/ noun [countable] British English informal DHTBa house that a lot of people admire and would like to live in – often used humorously. Des res is short for ‘desirable residence’. Origin des res (1900-2000) desirable residence ldoceonline.com