Definitions

1. adverb

used to indicate a time or point in the future or to introduce a consequence

“I’ll meet you at 5, then we can go out for dinner.”

2. conjunction

used to indicate a contrast or a consequence

“I wanted to go to the beach, but it was raining, so I stayed home then.”

3. adverb

used to indicate a time or point in the past

“After I finished my homework, I went to bed then.”

4. noun

a point in time, especially one that is significant or memorable

“I remember the day of my graduation, then, it was a great feeling.”