Definition & Meaning of "moddies"in English

What does "moddie" mean in Scottish slang?

The structure is a clipped shortening of "Modern Studies," dropping the middle and adding a "-ie" suffix for a casual, student friendly nickname. It is used in Scotland, especially among secondary school students, to refer to the school subject Modern Studies, which covers politics, society, and current affairs. People typically say "I've got a moddie exam tomorrow" or "Moddie is my favourite subject." The term originated in late 20th century Scottish student slang, and remains common in schools across Scotland.