'Halleluiah' definitions:

Definition of 'Halleluiah'

From: GCIDE

Halleluiah \Hal`le*lu"iah\, Hallelujah \Hal`le*lu"jah\ (h[a^]l`l[-e]*l[=u]"y[.a]), n. & interj. [Heb. See Alleluia.] Praise ye Jehovah; praise ye the Lord; -- an exclamation used chiefly in songs of praise or thanksgiving to God, and as an expression of gratitude or adoration. --Rev. xix. 1 (Rev. Ver. ) [1913 Webster]
So sung they, and the empyrean rung With Hallelujahs. --Milton. [1913 Webster]
In those days, as St. Jerome tells us,"any one as he walked in the fields, might hear the plowman at his hallelujahs." --Sharp. [1913 Webster]