n. （司机行话）刹车器; （书籍的）装订机( binder的复数形式 ); （购买不动产时包括预付订金在内的）保证书; 割捆机; 活页封面
英文释义
n. a machine that cuts grain and binds it in sheaves
n. something used to bind separate particles together or facilitate adhesion to a surface
n. holds loose papers or magazines