(Commonly just "laptop") A portable {personal computer} of a size suitable to rest comfortably on one' s legs. A laptop is smaller than a "luggable" (portable, but NOT comfortably) but bigger than a "palmtop" (easily carried in one hand or a shirt pocket). Toshiba were one of the first companies to produce laptops, in about 1989. [First example? Date? Difference from "NOTebook"?] (1994-12-21)