A partisan group is a political organization that is strongly committed to a particular set of beliefs or ideals. The term 'partisan group' can refer to any type of political organization, from a small local group to a large national party. The crossword solution for the term 'PARTISAN GROUP' is 'SIDE', which indicates that the group is aligned with one SIDE of an issue or debate. This could be a political party, a social movement, or any other type of organization that is dedicated to a particular cause.