noun
file (for holding papers); binder insert
Refers to a paper or document that is bound or filed into a binder, folder, or book. Often used in office or stationery contexts.
See also: ファイル
このファイルには綴じ込みがたくさんある。
This file has many inserts.
綴じ込み用の穴を開ける。
Punch holes for filing.
ファイル is a more general term for a file or folder, while 綴じ込み specifically refers to the bound or inserted papers within it.
Compound of 綴じ (tōji, 'binding', continuative form of 綴じる) + 込み (komi, 'including', continuative form of 込む). Literally 'binding in'.