Read the dictionary definition of dandy. All definitions for this word.
1. a sailing vessel with two masts; a small mizzen is aft of the rudderpost
2. a man who is much concerned with his dress and appearance
3. very good
1. he did a bully job
2. a neat sports car
3. had a great time at the party
4. you look simply smashing
5. we had a grand old time