1. British: A person obsessively interested in a thing or topic that doesn't seem to warrant such attention.

1. Cagoul; or a hooded zip-up jacket.
2. Trainspotters.
3. IT people in general, computer geeks.

Derogatory term, most frequently directed at people who obsessively pursue hobbies which consist almost entirely of gathering information about a favourite topic, generally a fairly benign and arcane device such as a specific type of computer. Origins possibly explained by the information-gatherer collectives' peculiar habit of wearing outdoor clothing or jackets at socially inappropriate or awkward times such as at the dinner table or in bed.

1. A fur coat garment, with hood, worn by Eskimos or Inuits.

2. A Western imitation of such garment, full of cheap insulating material, and lined with fake fur.

3. Garments worn by trainspotters, etc.

4. Train spotters, plane spotters, pylon spotters, bus spotters, mail van spotters, hearse spotters, Formula 1 spotters, 666 spotters, etc.

A warm, heavy jacket worn by some of the nerdiest people, such as trainspotters and pylon spotters.

1- A person with a highly uninteresting hobby/interest

2- A cry for help

(In the UK) A fan of pirate radio, especially offshore pirate radio.

So called because, while visiting the pirate radio ships, they were known for wearing anorak coats due to the cold and windy climate of the North Sea.