Can "run-through" be possibly a noun? Is it possible at all? If yes, can you, please, come up with a sentence that would contain this noun? Can you also, please, describe a situation, in which that sentence would naturally apply? Please note that I don't need those cases, in which "run-through" would act more like a modifier to another word ("He chose a run-through mode for his system", "There is a need in a run-through program", "Another run-through strategy will ruin the whole project", etc.)
We were all off book so we did a run-through of the entire script.
This is an acting term. A "run-through" is a preliminary practice performance of a play, done complete without interruption.
Note: "off book" means an actor has his/her lines committed to memory.
The night before her big speech, Carla gave it one last run-through.
Just to add my two cents, it can also be used in the context of performing a practice drill, as in: "We did a run-through of the code blue response and our times were terrible."