Definition
A "takeaway" has two main meanings. Firstly, it's food you buy from a restaurant to eat somewhere else, like pizza or fries. π Secondly, and more figuratively, a "takeaway" is a key point or lesson learned from something, such as a meeting, a book, or an experience. It is the main thing you 'take away' in your mind. It can be concrete (food) or abstract (knowledge).