- noun the set of basic essential instruction routines required for any operations in a computer system
- noun the soft edible part of a nut
- noun the seed and husk of a cereal grain
- The fundamental, core, or central part of something.
- The part of a computer's operating system which provides the most fundamental functions, such as managing memory, loading programs, and allocating system resources.
- The edible, usually central, part of a nut or stone of a fruit