a.

1. 移居（尤指移出国境）的；流浪的

n.

1. 移民；移居者
   The Italian navy saved thousands of migrants on the sea.

   意大利的海军在海上拯救了数以千计的移民。

2. 候鸟
3. 随季节迁移的民工（或动物）

n.

1. a person who moves from one place to another so as to find work.
2. an animal that migrates.

adj.