noun
wing mirror; side mirror
Refers to the external mirror mounted on a vehicle's door. In Japanese, this term is commonly used for both wing mirrors and side mirrors.
from English door mirror
車を駐車するときは、ドアミラーを確認してください。
Please check the side mirrors when parking the car.
この車のドアミラーは電動で格納できます。
The wing mirrors on this car can be folded electrically.