1.Definition: 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.

Related Noun(s):organiser, pda

Category: Objects

2.Definition: a person who brings order and organization to an enterprise

"She was the organizer of the meeting"

Related Noun(s):arranger, organiser

Category: People

3.Definition: someone who enlists workers to join a union

Related Noun(s):labor organizer, organiser

Category: People