'Binder' definitions:

Definition of 'binder'

From: WordNet
noun
A machine that cuts grain and binds it in sheaves [syn: binder, reaper binder]
noun
Something used to bind separate particles together or facilitate adhesion to a surface
noun
Holds loose papers or magazines [syn: binder, ring- binder]
noun
Something used to tie or bind [syn: binder, ligature]

Definition of 'Binder'

From: GCIDE
  • Binder \Bind"er\, n.
  • 1. One who binds; as, a binder of sheaves; one whose trade is to bind; as, a binder of books. [1913 Webster]
  • 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. [1913 Webster]
  • 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]

Synonyms of 'binder'

From: Moby Thesaurus