(baseball) An instance where the batter is allowed to go directly to first base without the possibility of being put out, due to the opposing pitcher delivering four balls.

Alternative spelling of base on balls

(computing) The first 640 kilobytes of RAM on an IBM-compatible PC. / (computing) The amount of RAM installed on a new computer, before any optional upgrades.

plural of cloud base

(computing) A character whose appearance is modified by one or more combining characters.

plural of base character

A collection of a building’s structural elements resting on its foundation to provide partial separation of the building from shaking ground thus upgrading the building's seismic fitness. For video demonstration, click here: http://www.youtube.com/user/vshustov#p/f/11/ZqlXp3czrrM

(object-oriented programming) A class from which other classes can be derived, inheriting its functionality or interface; a potential superclass for subclasses.

plural of BASE jumper

A group of customers and/or consumers that a business serves.