'Tuesday' originates from Old English, specifically the word 'Tiwesdæg,' where 'Tiw' was the name of a god and 'dæg' meant 'day.'

'Tiwesdæg' transformed into the Middle English word 'Tewesday,' and eventually became the modern English word 'Tuesday.'

Initially, it meant 'Tiw's day,' referring to the Norse god of war, and this meaning has largely remained the same in modern usage.