Row between two Argentinians (3)
I believe the answer is:
oar
'row' is the definition.
(oar can mean to row with oars)
'between two argentinians' is the wordplay.
'between' indicates the answer is hidden within the clue.
'OAR' is hidden in the letters of 'two argentinians'.
(Other definitions for oar that I've seen before include "Implement to propel a boat" , "Sportsman" , "spoon?" , "propellor" , "Boat propellant" .)