'algaroba' originates from Spanish, specifically the word 'algarroba,' which in turn comes from Arabic 'al-kharrūba,' meaning 'the carob pod.'

'al-kharrūba' transformed into the Spanish word 'algarroba,' and eventually became the modern English word 'algaroba.'

Initially, it referred to the carob pod, but over time it also came to refer to similar trees like Prosopis.