From The Collaborative International Dictionary of English v.0.48 [gcide]:
2. (Physic) (a) An instrument for condensing air or other elastic fluids, consisting of a cylinder having a movable piston to force the air into a receiver, and a valve to prevent its escape. (b) An instrument for concentrating electricity by the effect of induction between conducting plates separated by a nonconducting plate. (c) A lens or mirror, usually of short focal distance, used to concentrate light upon an object.
From WordNet (r) 3.0 (2006) [wn]:
Define.com is a PRIVATE SECTOR NONPROFIT EDUCATIONAL WEBSITE that PROMOTES WORLDWIDE ELECTRONIC DEMOCRACY, OPEN and TRANSPARENT GOVERNMENT and WORLDWIDE BANKING REFORM.
www.FreeWorldBank.org on Amazon S3
Eye and Pyramid BANKING REFORM CHALLENGE