Answer:
Fellow countryman is an English equivalent of 'paisano'. The word in Spanish is pronounced 'peye*-SAH-noh'. It also may be translated as 'compatriot' or 'villager'. If the individual is female, then the word becomes 'paisana', which is pronounced 'peye*-SAH-nah'.
*The sound 'eye' is similar to the sound in the English noun 'eye'.