'Bella' originates from Italian, specifically the word 'bella', meaning 'beautiful'.

'Bella' developed from the Italian feminine adjective 'bella', which in turn comes from Latin 'bellus' (meaning 'pretty' or 'handsome'), and was adopted into English mainly as a given name and occasional loanword.

Initially it meant 'beautiful' in Latin/Italian; over time it became commonly used as a feminine personal name retaining the sense of 'beautiful'.