1.NounA period of time spent doing some pleasant, enjoyable or entertaining activity.
"Let the good times roll.; A good time was had by all.; Q: Did you have a good time at your friend's wedding reception? A: Yes, it was a good time for everyone."
2.NounThe reduction of a prisoner's sentence for good conduct while imprisoned.
3.NounA suitable time; a suitable occasion.
"When is a good time for you?; Is this a good time?; There's never a good time for [X].; It's always a good time for [X]."