noun

• A person who arranges the details of a public event.
• (computing) A hand-held micro-computer that will perform specific tasks; can be used as an electronic diary, alarm clock, recorder of memos and notes, a portable database etc.
• A non-electronic notebook or calendar or something similar, used to organize one's affairs.
• (medicine) A group of cells that, together with the evocator, control differentiation in the embryo; the inductor