As a Verb or Adjective:
1. With reference to two other things, to be located so that one thing is on one side of you and another thing is on the other side of you. English = (be) between, (be) in between.
2. With reference to two other events, to be located in time so that now or some third event is after one event and before the other event. English = (be) between, (be) in between.