I am reading a book and I am finding this kind of expressions:
'Why, people in perfect health act in the same way too,'
'Why, are you all afraid of me?'
'What nonsense he is talking! Why, you are in a sentimental mood today, are you?'
'And why should they compensate me? Why, he was drunk and threw himself under the horses'
My wondering is about the use of the bold "why". I understand it as an expression, perhaps equivalent to "ah?" or "what?", but I am afraid my understanding is not correct or inaccurate. Help please!