In section 4 of Starting Forth tutorial, the answer to the 5th question is:

: STAR   [CHAR] * EMIT ;
: STARS  ( #stars -- )  0 ?DO  STAR  LOOP ;
: STARS  ( n -- )  ?DUP IF  STARS  THEN ;

The third definition redefines STARS word using previous definition.

Interpreter says:

redefined STARS   ok

and as I type see:

SEE STARS
: STARS  
  ?dup 
  IF     STARS 
  THEN ; ok

Why the former definition is still alive as the word STARS as been replaced in the words dictionary? and is it possible to access/see the loop definition (the second one)?