Add :term:s for iterator.
diff --git a/Doc/library/cookielib.rst b/Doc/library/cookielib.rst
index 44045d3..a84649c 100644
--- a/Doc/library/cookielib.rst
+++ b/Doc/library/cookielib.rst
@@ -144,7 +144,7 @@
CookieJar and FileCookieJar Objects
-----------------------------------
-:class:`CookieJar` objects support the iterator protocol for iterating over
+:class:`CookieJar` objects support the :term:`iterator` protocol for iterating over
contained :class:`Cookie` objects.
:class:`CookieJar` has the following methods: