Webster's Revised Unabridged Dictionary · 1913

Halleluiah

Halleluiah (hal`le*lū"yȧ) , noun and interjection

[Hebrew 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. )
So sung they, and the empyrean rung With Hallelujahs. — Milton
In those days, as St. Jerome tells us,“any one as he walked in the fields, might hear the plowman at his hallelujahs.” — Sharp

Also: Hallelujah