What does "hail" mean?

Additional senses

1. 2.To name; to designate; to call. And such a son as all men hailed me happy. Milton.
2. 3.To declare, by hailing, the port from which a vessel sails or where she is registered; hence, to sail; to come; -- used with from; as, the steamer hails from New York.
3. 4.To report as one's home or the place from whence one comes; to come; -- with from. [Colloq.] G. G. Halpine.
4. 5.An exclamation of respectful or reverent salutation, or, occasionally, of familiar greeting. "Hail, brave friend." Shak. All hail. See in the Vocabulary. -- Hail Mary, a form of prayer made use of in the Roman Catholic Church in invocation of the Virgin. See Ave Maria.
5. 6.A wish of health; a salutation; a loud call. "Their puissant hail." M. Arnold. The angel hail bestowed. Milton.