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Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   Psalm
       n 1: one of the 150 lyrical poems and prayers that comprise the
            Book of Psalms in the Old Testament; said to have been
            written by David
       2: any sacred song used to praise the deity
       v 1: sing or celebrate in psalms; "He psalms the works of God"