glossary: define 'stash entry'

Signed-off-by: Liam Beguin <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: liambeguin

Documentation/glossary-content.txt

@@ -570,6 +570,10 @@ The most notable example is `HEAD`.
 	is created by giving the `--depth` option to linkgit:git-clone[1], and
 	its history can be later deepened with linkgit:git-fetch[1].
 
+[[def_stash]]stash entry::
+	An <<def_object,object>> used to temporarily store the contents of a
+	<<def_dirty,dirty>> working directory and the index for future reuse.
+
 [[def_submodule]]submodule::
 	A <<def_repository,repository>> that holds the history of a
 	separate project inside another repository (the latter of