'sack' originates from Middle English, specifically the word 'sak,' which came from Old English 'sacc,' derived from Latin 'saccus,' meaning 'bag.'

'saccus' transformed into the Old English word 'sacc,' and eventually became the modern English word 'sack.'

Initially, it meant 'bag or pouch,' but over time it evolved to include meanings related to dismissal and plundering.