Source : Webster's Revised Unabridged Dictionary (1913)

Sabbatic \Sab*bat"ic\, Sabbatical \Sab*bat"ic*al\, a. [Gr. ?:
   cf. F. sabbatique.]
   Of or pertaining to the Sabbath; resembling the Sabbath;
   enjoying or bringing an intermission of labor.

   {Sabbatical year} (Jewish Antiq.), every seventh year, in
      which the Israelites were commanded to suffer their fields
      and vineyards to rest, or lie without tillage.

Source : WordNet®

sabbatical
     adj 1: of or relating to the Sabbath; "Friday is a sabbatical day
            for Muslims" [syn: {sabbatic}]
     2: of or relating to sabbatical leave; "sabbatical research
        project"

sabbatical
     n : a leave usually taken every seventh year [syn: {sabbatical
         leave}]