Drop case of wines and port - clumsy! (5)
I believe the answer is:
inept
'clumsy' is the definition.
(I know that clumsy can be written as inept)
'drop case of wines and port' is the wordplay.
I cannot really understand how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is found within the answer.
'port' could be 'pt' (abbreviation) and 'pt' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for inept that I've seen before include "Incompetent or awkward" , "Ham-fisted" , "Unsuitable, clumsy" , "Lacking skill" , "Futile" .)