noun
words; lines; one's lines
Refers to the words spoken by an actor or performer; often used in the context of memorizing or delivering lines in a play, film, or similar performance.
彼は舞台で台辞を忘れてしまった。
He forgot his lines on stage.
台辞を覚えるのに一週間かかった。
It took a week to memorize the lines.