Having at least some basis in reality

plural of power base

plural of air base

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

Dated form of baseball. (ball game)

(chemistry, sciences) A gas like ammonia that has basic properties.

With respect to financial or other assistance, derived from need rather than earned by merit.

A database designed to meet the complex storage and retrieval requirements of computerized knowledge management, especially in support of artificial intelligence or expert systems.

(baseball) The base after second base in a counter-clockwise path around a baseball infield. / (blackjack) The betting spot located immediately to the right of the dealer, which is last to act.

(baseball) A base without a runner on it.