toaster:

noun.

1. The archetypal really stupid application for an embedded microprocessor controller; often used in comments that imply that a scheme is inappropriate technology. "DWIM for an assembler? That'd be as silly as running UNIX on your toaster!"
2. A very, very dumb computer. "You could run this program on any dumb toaster." See {bitty box}, {Get a real computer!}, {toy}, {beige toaster}.
3. A Macintosh, especially the Classic Mac. Some hold that this is implied by sense 2.
4. A peripheral device. "I bought my box without toasters, but since then I've added two boards and a second disk drive."