Crossword Genius

Sozzled jailor spilling port wine (5)

Ross

I believe the answer is:

rioja

I'm a little stuck... Click here to teach me more about this clue!

'wine' is the definition.
(Rioja is an example)

'sozzled jailor spilling port' is the wordplay.
I cannot really understand how this works, but
'port' could be 'rio' (Rio de Janeiro is a port) and 'rio' is present in the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for rioja that I've seen before include "it comes from grapevine" , "Spanish wine type" , "wine region" , "Open space (ancient Greek)" , "Spanish table wine" .)

I've seen this clue in The Hindu.
Want a hint initially instead of a full solution? Install my app