Meaning of BINDER in English

BINDER

bind ‧ er /ˈbaɪndə $ -ər/ BrE AmE noun

1 . [countable] a removable cover for holding loose sheets of paper, magazines etc ⇨ ↑ ring binder

2 . [countable] a person or machine that fastens the parts of a book together

3 . [uncountable and countable] a substance that makes things stick together

4 . [countable] American English an agreement in which you pay money to show that you intend to buy a property

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.