The Collaborative International Dictionary of English v.0.48:

Hymnal \Hym"nal\, n.
   A collection of hymns; a hymn book.
   [1913 Webster]

WordNet (r) 3.0 (2006):

hymnal
    n 1: a songbook containing a collection of hymns [syn: hymnal,
         hymnbook, hymnary]

Moby Thesaurus II by Grady Ward, 1.0:

53 Moby Thesaurus words for "hymnal":
   alto, arrangement, baritone, bass, bravura, choral, choric,
   coloratura, copy, draft, dramatic, edition, falsetto, heroic,
   hymnbook, instrumental score, libretto, liturgical, lute tablature,
   lyric, music, music paper, music roll, musical notation,
   musical score, notation, opera, opera score, operatic,
   orchestral score, part, piano score, psalmic, psalmodial,
   psalmodic, sacred, score, sheet music, short score, singing,
   songbook, songster, soprano, tablature, tenor, text, transcript,
   transcription, treble, version, vocal, vocal score,
   written music