Documentation for r5990[3567].
diff --git a/Doc/glossary.rst b/Doc/glossary.rst
index fb5c018..307bad3 100644
--- a/Doc/glossary.rst
+++ b/Doc/glossary.rst
@@ -338,6 +338,13 @@
mutable
Mutable objects can change their value but keep their :func:`id`. See
also :term:`immutable`.
+
+ named tuple
+ A tuple subclass whose elements also are accessible as attributes via
+ fixed names (the class name and field names are indicated in the
+ individual documentation of a named tuple type, like ``TestResults(failed,
+ attempted)``). Named tuple classes are created by
+ :func:`collections.namedtuple`.
namespace
The place where a variable is stored. Namespaces are implemented as