'Airosas' is the female plural of the word 'airoso'. Airy is usually used in the expression 'exit airy'. The word expressly means in a way as victorious, triumphant. That someone 'gets out of the casino' means that someone 'gets out of the casino triumphant', that is, they've left the casino with a lot of money. In the case of this , you could put the example of 'come out angry'.
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