What is the meaning of Hallelujah?

An exclamation used in songs of praise or thanksgiving to God.

A general expression of gratitude or adoration.

A shout of “Hallelujah”.

A song of praise to God; a musical composition based on the word "Hallelujah".

General praise.

To cry "hallelujah" in praise.

Alternative form of halleluja

Alternative form of halleluja

Source: wiktionary.org