noun
A casual hooded jacket, often waterproof or windproof, used for outdoor activities. The term is a loanword from German 'Jacke' and is especially common in mountaineering and camping contexts.
from German Jacke
See also: ウインドヤッケ
山に行く前に、新しいヤッケを買った。
Before going to the mountains, I bought a new hooded jacket.
急に雨が降ってきたので、ヤッケを着込んだ。
It suddenly started raining, so I put on my parka.