What does RIM mean?

Research In Motion. They manufacture all Blackberry devices and run the global network that all Blackberry email travels on.

... it could also mean any of the following:

1. the outer edge, border, margin, or brink of something, esp. of a circular object.

2. any edge, margin, or frame added to or around a central object or area.

3. the outer circle of a wheel, attached to the hub by spokes.

4. a circular strip of metal forming the connection between an automobile wheel and tire, either permanently attached to or removable from the wheel.

5. a drive wheel or flywheel, as on a spinning mule.

6. Basketball. the metal ring from which the net is suspended to form the basket.

7. Journalism. the outer edge of a usually U-shaped copy desk, occupied by the copyreaders. Compare slot (def. 5).

8. Metallurgy. (in an ingot) an outer layer of metal having a composition different from that of the center.
–verb (used with object)

9. to furnish with a rim, border, or margin.

10. (of a golf ball or putt) to roll around the edge of (a hole) but not go in.

11. Basketball. (of a basketball) to roll around (the rim of the basket) and not go in.

12. to coat or encrust the rim of (a glass): Rim each ****tail glass with salt.