A cumann (Irish for association; plural cumainn) is the lowest local unit or branch of a number of Irish political parties. The term cumann may also be used to describe a non-political association.
Traditionally Fianna Fáil and Sinn Féin have called their local branches by that term. Fine Gael also uses the term to describe its local branches in the Clare constituency.
Read more about Cumann: Joining A Cumann, Structure of Fianna Fáil, Additional Reading