a. 1. Registered. [ 1913 Webster ]
2. On the way; destined. [ Colloq. ] [ 1913 Webster ]
3. reserved in advance; held for future use. See reserve{ 2 }. [ PJC ]
n. A support placed at the end of a row of books to keep them upright (on a shelf or table). [ WordNet 1.5 ]
n. One who enters accounts or names, etc., in a book; a bookkeeper. [ 1913 Webster ]