Official desk to cart off (10)
I believe the answer is:
bureaucrat
'official' is the definition.
(a bureaucrat is a government official)
'desk to cart off' is the wordplay.
'desk' becomes 'bureau' (type of writing desk).
'off' indicates an anagram.
'cart' with letters rearranged gives 'crat'.
'bureau'+'crat'='BUREAUCRAT'
(Other definitions for bureaucrat that I've seen before include "Mandarin" , "Government official" , "Administrator" .)