A script or written manuscript for stage plays, films, or TV programs containing dialogue and stage directions (largely synonymous with screenplay).
俳優は台本を何度も読み返して準備した。
The actor prepared by reading the script many times.
監督の指示で台本が何度も書き直された。
The script was rewritten many times at the director's instruction.
そのドラマは台本が優れていると評判だ。
That drama is reputed to have an excellent script.