Hello, I'm Esther taking a tesol class.
Thank you for your passionate lectures. I always appreciate it.

I have one question about the meaning of the word.
The prompt
What does that mean in the lecture? (ex. Picture Prompts, Turn the 2 questions into a prompt etc.)
I found the meaning in the dictionary.
In the dictionary, there are adjective and verb form of the word.
I have no idea what the word means when it is used as a noun.