Fair enough. My assumption was that you would consider a source to bytecode compiler an interpreter (to be fair most people do). The next time I say something about Common Lisp I will list all the implementations instead of saying something as simplistic as "compiler" or "interpreter".
It's also complicated because some implementations support several modes. ECL for example has a Lisp interpreter, a byte-code compiler&interpreter and a native compilation via C. All code variants can work together and call each other.
