Source : WordNet®

organiser
     n 1: someone who enlists workers to join a union [syn: {organizer},
           {labor organizer}]
     2: a person who brings order and organization to an enterprise
        [syn: {organizer}, {arranger}]
     3: a lightweight consumer electronic device that looks like a
        hand-held computer but instead performs specific tasks;
        can serve as a diary or a personal database or a telephone
        or an alarm clock etc. [syn: {personal digital assistant},
         {PDA}, {personal organizer}, {personal organiser}, {organizer}]