L2 cache

from The Free On-line Dictionary of Computing (8 July 2008)

secondary cache
L2 cache
level 2 cache
level two cache
second level cache

   <memory management> (Or "second level cache", "level two
   cache", "L2 cache") A larger, slower {cache} between the
   {primary cache} and main memory.  Whereas the {primary cache}
   is often on the same {integrated circuit} as the {central
   processing unit} (CPU), a secondary cache is usually external.

   (1997-06-25)