n. 捆缚者, 用以绑缚之物, 活页夹

[化] 粘结剂

[医] 腹带, 结合剂, 粘合剂

[经] 活页封面, 临时契约通知已保险

Binder \Bind"er\, n.
1. One who binds; as, a binder of sheaves; one whose trade is
to bind; as, a binder of books.

2. Anything that binds, as a fillet, cord, rope, or band; a
bandage; -- esp. the principal piece of timber intended to
bind together any building.

3. a pair of stiff oblong covers, sometimes detachable,
designed for insertion of paper pages to create a
book-like document, such as in a {loose-leaf binder}.
[PJC]