- noun a very small computer which can be held in your hand and which usually has a character recognition screen instead of a keyboard
- noun a personal computer that is small enough to be held in one hand and operated with the other
- A computer which is small enough to hold in a hand or place in a pocket. Such computers generally have a specialized operating system, and provide an interface to communicate with other computers, such as desktop systems. There are many types, including models which are industry-specific, such as those utilized by transport companies to keep track of shipments, those that provide only email functions, or PDAs. Also spelled palm-top. Also called palmtop computer, pocket computer, or handheld computer.