Index: llvm/docs/Lexicon.rst
===================================================================
--- llvm/docs/Lexicon.rst
+++ llvm/docs/Lexicon.rst
@@ -54,9 +54,12 @@
 -
 
 **CFI**
+    This abbreviation has two meanings.
+    Either:
     Call Frame Information. Used in DWARF debug info and in C++ unwind info
     to show how the function prolog lays out the stack frame.
-
+    
+    Or:
     Control Flow Integrity. A general term for computer security techniques
     that prevent a wide variety of malware attacks from redirecting the flow
     of execution (the control flow) of a program.