Have a drink in Spain, lying down (6)
I believe the answer is:
supine
'lying down' is the definition.
'have a drink in spain' is the wordplay.
'have a drink' becomes 'sup' (I've seen this in other clues).
'spain' becomes 'e' (abbreviation for Espana).
'sup'+'in'+'e'='SUPINE'
(Other definitions for supine that I've seen before include "Slow in acting" , "offering no resistance" , "Lying on one's back - passive" , "Lethargic" , "Recumbent" .)