a three-ring binder a metal or plastic spine a cover that is usually made of paper or plastic a pocket in the front or back cover metal or plastic rings to hold pages a closure strap to keep the binder closed
binder which is a three-ring binder binder which is a metal or plastic spine binder which is a cover that is usually made of paper or plastic binder which is a pocket in the front or back cover binder which has metal or plastic rings to hold pages binder which is a closure strap to keep the binder closed