since we link to Multi-Dispatch, we might actually put a text there

Author: gfldex

doc/Language/glossary.pod6

@@ -580,11 +580,18 @@ L<glossary|http://openjdk.java.net/groups/hotspot/docs/HotSpotGlossary.html>
 for entries missing from the present one.
 
 =head1 Multi-Dispatch
-X<|Multi-Dispatch>
+X<|Multi-Dispatch>X<|MMD>
+
+The process of picking a candidate for calling of a set of methods or subs that
+come by the same name but with different arguments. The most narrow candidate
+wins.
 
 =head1 multi-method
 X<|multi-method>
 
+A L<method|/type/Method> that has multiple candidates going by the same name
+and are subject to L<Multi-Dispatch|#Multi-Dispatch>.
+
 =head1 Niecza
 X<|Niecza>