The Spanish word 'alumno' (meaning 'student' or 'pupil') comes from the Latin word 'alumnus', which meant 'pupil' or 'disciple'. Interestingly, the Latin 'alumnus' itself derives from the verb 'alere', meaning 'to nourish' or 'to feed'. This etymology reflects the ancient concept that a student is someone who is metaphorically nourished with knowledge by their teacher. The literal meaning of 'alumnus' in Latin was 'one who is nourished'.

While 'alumno' is already a common Spanish word, it's worth noting that Spanish has preserved this word quite faithfully from its Latin origin without developing many variant forms.

English speakers might recognize the connection to the word 'alumnus' (plural 'alumni'), which is borrowed directly from Latin and is commonly used to refer to a graduate or former student of a school, college, or university. The English usage maintains the same educational context as Spanish 'alumno', though it specifically refers to former rather than current students.