1a cupboard with drawers or shelves for storing or displaying articles:a cocktail cabinet
a wooden box or piece of furniture housing a radio, television set, or speaker.
2 (also Cabinet) (in the UK, Canada, and other Commonwealth countries) the committee of senior ministers responsible for controlling government policy: [as modifier]:a cabinet meeting
(in the US) a body of advisers to the President, composed of the heads of the executive departments of the government.