1. Used of hardware OR software designs, implies "elegance in the small", that is, a design OR implementation that may not hold any surprises but does things in a way that is reasonably intuitive and relatively easy to comprehend from the outside. The antonym is "grungy" OR crufty. 2. To remove unneeded OR undesired files in a effORt to reduce clutter: "I' m cleaning up my account." "I cleaned up the garbage and now have 100 Meg free on that partition." [Jargon File] (1994-12-12)