1. In hand valuation, a way to describe that a particular feature or the hand as a whole is better than average. For example, a hand with 13 HCP, a 5-card suit, and a couple of tens you might say is a good 13 points.
2. In the play, used to describe a hand in which every card is a winner, eg ‘Dummy is good’ or a card that is a winner. ‘High’ has the same meaning in this sense.