A brief summary is a short, clear description that presents the main facts or ideas of a subject concisely.
It is used to give an overview without unnecessary details, helping the reader or listener understand the essential information quickly.
From the Cambridge English Dictionary:
"a short, clear description that gives the main facts or ideas."
This defines both "brief" and "summary" in context, emphasizing clarity and conciseness.
Author's note: A brief summary distills complex information into a concise overview, making comprehension faster and easier.