From Longman Dictionary of Contemporary Englishposte restanteposte res‧tante /ˌpəʊst ˈrestɒnt $ ˌpoʊst reˈstɑːnt/ noun [uncountable] British EnglishTCM a post office department which keeps letters for people who are travelling, until they arrive to collect themFrom Longman Business Dictionaryposte restanteposte res‧tante /ˌpəʊst ˈrestɒntˌpoʊst reˈstɑːnt/ noun [uncountable] British English a post office department which keeps letters for people who are travellingSYNgeneral delivery AmE