a sentence on spesh

Author: timo

S99-glossary.pod

@@ -1,4 +1,3 @@
-
 =head1 TITLE
 
 Synopsis 99: Glossary
@@ -873,6 +872,12 @@ glass of ice water.
 
 =head2 spectest
 
+=head2 spesh
+
+A functionality of the MoarVM platform that uses run-time gathered data to
+improve commonly used pieces of bytecode. It is much like a JIT Compiler,
+except that those usually output machine code rather than bytecode.
+
 =head2 star
 
 See L</Rakudo *>.