noun
ledger; original record; register
Refers to the primary or master record book where transactions, registrations, or official entries are first recorded. Often used in accounting, legal, and administrative settings.
会計監査のために原簿を確認する必要がある。
We need to check the ledger for the accounting audit.
登記の内容は原簿に記載されている。
The details of the registration are recorded in the original register.