What does DUO mean?

Luckily the money from DUO was back in her account at the end of the month.

Dutch student slang. This is a Dutch word. You will hear it a lot at Dutch universities, student associations and in student houses.

DUO stands for Dienst Uitvoering Onderwijs. Students lovingly call it "ome DUO", uncle DUO. For a lot of students it is their main source of income while studying. The monthly payment is called stufi. Internationals can sometimes apply too, depending on their situation. Also read about broke student and leenstelsel.