Walnut – English Flashcard for Walnut for IELTS Updated: July 9, 2024 by Dr. Mohammad Hossein Hariri AslWalnut Walnut (noun) /ˈwɔːl.nʌt/ US /ˈwɑːl-/a nut with a very hard shell which is very similar to human brain and also slightly tastes bitter:I had some walnut and cheese for breakfast today.