poste restante
Concise Oxford English Dictionary © 2008 Oxford University Press:
poste restante /pəʊst ˈrɛst(ə)nt/
▶noun Brit. a department in a post office that keeps letters for an agreed period until collected by the addressee.
– origin C18: from Fr., lit. ‘mail remaining’.
'poste restante' also found in these Oxford entries:

