n.

1. （书籍）装订工；捆缚（或包扎）者[C]
2. 捆缚（或包扎）用具；绳索，带子[C]
3. 粘结剂[C][U]
   Tar is a binder for gravel in paving.

   在铺路时柏油用来粘结砾石。

4. 夹子，纸夹[C]
   a loose-leaf binder

   活页夹

5. 割捆机；（收割机上的）捆缚装置[C]
6. 【律】保证书；临时契约[C]

n.

1. a cover for holding magazines or loose sheets of paper together.
2. a reaping machine that binds grain into sheaves.
3. a bookbinder.