- noun a group of special keys used for certain applications
- A supplementary or separate grid of keys having number, function, or cursor keys, which simplify or accelerate keyboard entry.
- Any small grid of keys, such as that of a calculator or telephone.
Information & Library Science
- noun a set of numerical keys often used for security devices to open doors by means of a known code
- noun numerical keys set separately on the right-hand side of a computer keyboard