—anorak /ˈæn.ə.ræk/
noun [C] MAINLY UK (US USUALLY parka) (COAT)
► F0 a short coat that protects the wearer against wind, rain, and cold weather, usually with a part for covering the headSee picture: anorak 
Thesaurus+: ↑Coats, jackets and cloaks
noun [C] UK DISAPPROVING (PERSON)
► F0 a boring person who is too interested in the details of a hobby and finds it difficult to meet and spend time with other people: » There are enough facts and figures in this book to keep even the most obsessive anorak fascinated for hours.Thesaurus+: ↑Enthusiasts , ↑Admirers