Some wine, Argentinian, close at hand (4)
I believe the answer is:
near
'close at hand' is the definition.
(I've seen this before)
'some wine argentinian' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'NEAR' is hidden in the letters of 'wine argentinian'.
(Other definitions for near that I've seen before include "Miserly and proximate" , "unlikely to spend much?" , "Close; parsimonious" , "Within reach" , "Approaching" .)