'does' originates from Old English, specifically the word 'dōþ', which is the third person singular present tense of 'dōn', meaning 'to do'.

'dōþ' transformed into Middle English 'doth', and eventually became the modern English word 'does'.

Initially, it meant 'performs an action', and this meaning has remained the same in modern usage as the third person singular present tense of 'do'.