Pronunciation: (pōst" re-stänt' or, esp. Brit., res'tänt; Fr. pôst res-tänt'), [key]
1. a direction written on mail to indicate that it should be held at the post office until called for by the addressee.
2. Chiefly Brit.a department in charge of such mail.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.