wing mirror
noun1
Either of a pair of mirrors on the sides of a car or other vehicle that enable the driver to see to the side and behind.
- I could see the dog running behind me in my wing mirror, but couldn't do anything about it.
noun
Either of a pair of mirrors on the sides of a car or other vehicle that enable the driver to see to the side and behind.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.