noun
official register; authenticated copy; play script
Historical term for an official record book or an authorized copy of a document; also used for the script of a play, especially in traditional theatre contexts.
江戸時代の正本には、町人の名前が記録されていた。
In the Edo period, the names of townspeople were recorded in the official register.
歌舞伎の正本を読むと、当時
Reading a kabuki play script reveals the language usage of the time.