Completely, after "in" (4)
I believe the answer is:
'completely after in' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for toto that I've seen before include "Dorothy's dog in The Wizard of Oz" , "Famous film dog" , "[FRIEND OF DOROTHY]" , "member of the 5d band" .)