bạllen A transitive verb
clench ‹fist›; crumple ‹paper› into a ball; press ‹snow etc.› into a ball; s. auch Faust, geballt B B sich ballen reflexive verb
‹clouds› gather, build up; ‹crowd› gather; ‹traffic› build up; ‹fist› clench; (figurative) ‹problems, difficulties, etc.› accumulate, mount up