n.

1. 其时，其间[the S]
   In the meanwhile I'll visit an old friend of mine.

   在这期间我将去拜访我的一位老朋友。

ad.

1. 其间；同时
   Mother went shopping; meanwhile, I cleaned the house.

   母亲去买东西；我打扫屋子。

adv.

1. (also in the meanwhile) in the intervening period of time.
2. on the other hand.