Completely swallowed by Dorothy's dog (2,4)
I believe the answer is:
in toto
'completely' is the definition.
(I've seen this before)
'swallowed by dorothy's dog' is the wordplay.
I cannot really understand how this works, but
'dog' could be 'toto' (I've seen this before) and 'toto' is found within the answer.
The remaining letters 'in' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for in toto that I've seen before include "In entirety" , "As a whole (Lat.)" , "Wholly" , "overall" , "All told" .)