anoraks

2. People who are very enthusiastic about a hobby and talk about it a lot.

The train anoraks gathered at the station to watch the old steam engine.

3. A person who is deeply interested in technical details, sometimes seen as overly focused.

My uncle is a computer anorak who knows every part of a motherboard.

4. A pullover jacket with a hood, often worn for sports or casual wear.

He pulled his anorak over his head before heading out to the field.