auditor

1. (rare) One who listens, typically as a member of an audience.Examples: "There is another of better notice, and whispered through the world with some attention; credulous and vulgar auditors readily believing it, and more judicious and distinctive heads not altogether rejecting it."; "Thus (as you will see with half an eye, my wise little auditors) these good old dames had fallen into a strange perplexity."; "Sampson's tongue was still flying with rapidity, as if his auditors had not been void of a number, while Mr. Alboni and Natalie were holding a consultation aside."rare

2. (Scientology) One trained to perform spiritual guidance procedures.