'psalm' originates from Greek, specifically the word 'psalmos,' where 'psallein' meant 'to pluck or play a stringed instrument.'

'psalmos' transformed into the Latin word 'psalmus,' and eventually became the modern English word 'psalm' through Old English.

Initially, it meant 'a song sung to a harp,' but over time it evolved into its current meaning of 'a sacred song or hymn.'