Pub in Cordoba registered (3)
I believe the answer is:
bar
'pub' is the definition.
(both are drinking establishments)
'in cordoba registered' is the wordplay.
'in' indicates the answer is hidden within the clue.
'BAR' is hidden in the letters of 'cordoba registered'.
(Other definitions for bar that I've seen before include "Public house" , "measure of pressure" , "See 9" , "Ballet dancer's exercise rail" , "Barrier; pressure unit" .)