Index: Doc/library/ast.rst
===================================================================
--- Doc/library/ast.rst	(revision 88164)
+++ Doc/library/ast.rst	(working copy)
@@ -110,9 +110,9 @@
 Apart from the node classes, :mod:`ast` module defines these utility functions
 and classes for traversing abstract syntax trees:
 
-.. function:: parse(expr, filename='<unknown>', mode='exec')
+.. function:: parse(source, filename='<unknown>', mode='exec')
 
-   Parse an expression into an AST node.  Equivalent to ``compile(expr,
+   Parse the source into an AST node.  Equivalent to ``compile(source,
    filename, mode, ast.PyCF_ONLY_AST)``.
 
 
Index: Lib/ast.py
===================================================================
--- Lib/ast.py	(revision 88164)
+++ Lib/ast.py	(working copy)
@@ -28,12 +28,12 @@
 from _ast import __version__
 
 
-def parse(expr, filename='<unknown>', mode='exec'):
+def parse(source, filename='<unknown>', mode='exec'):
     """
-    Parse an expression into an AST node.
-    Equivalent to compile(expr, filename, mode, PyCF_ONLY_AST).
+    Parse the source into an AST node.
+    Equivalent to compile(source, filename, mode, PyCF_ONLY_AST).
     """
-    return compile(expr, filename, mode, PyCF_ONLY_AST)
+    return compile(source, filename, mode, PyCF_ONLY_AST)
 
 
 def literal_eval(node_or_string):