diff --git a/src/core/README.md b/src/core/README.md
index 62865d0c13e..44c6f247725 100644
--- a/src/core/README.md
+++ b/src/core/README.md
@@ -1,4 +1,4 @@
 #Overview
 
-This directory contains source code for shared C library. Libraries in other languages in this repository (C++, Ruby,
+This directory contains source code for C library (a.k.a the *gRPC C core*) that provides all gRPC's core functionality through a low level API. Libraries in other languages in this repository (C++, Ruby,
 Python, PHP, NodeJS, Objective-C) are layered on top of this library.