[1] : The Collaborative International Dictionary of English v.0.48

hail \hail\, interj. see hail, v. t.
   an exclamation of respectful or reverent salutation, or,
   occasionally, of familiar greeting. "hail, brave friend."
   --shak.
   1913 webster

   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.
      1913 webster
see also:
hail all hail hail mary ave maria 

[2] : WordNet (r) 2.0

hail mary
     n : a salutation to the virgin mary now used in prayers to her
         syn: ave maria
see also:
ave maria 

[3] : Moby Thesaurus II by Grady Ward, 1.0

38 moby thesaurus words for "hail mary":
   angelus, ave, ave maria, kyrie eleison, paternoster, aid prayer,
   appeal, beadroll, beads, beseechment, bidding prayer, breviary,
   chaplet, collect, communion, contemplation, devotions, entreaty,
   grace, impetration, imploration, intercession, invocation, litany,
   meditation, obsecration, obtestation, orison, petition, prayer,
   prayer wheel, rogation, rosary, silent prayer, suit, supplication,
   thanks, thanksgiving

Hail Mary >> H Words
Hail Mary, definition of term: Hail Mary
hail+mary_pag1.html

Mary >> M Words
Mary, definition of term: Mary
mary_pag1.html

Hail >> H Words
Hail, definition of term: Hail
hail_pag1.html

Hail From >> H Words
Hail From, definition of term: Hail From
hail+from_pag1.html

Mary Jane >> M Words
Mary Jane, definition of term: Mary Jane
mary+jane_pag1.html

Bloody Mary >> B Words
Bloody Mary, definition of term: Bloody Mary
bloody+mary_pag1.html

Mary Baker Eddy >> M Words
Mary Baker Eddy, definition of term: Mary Baker Eddy
mary+baker+eddy_pag1.html