(informal) A demonstration or visual explanation.

(informal) A recording of a song meant to demonstrate its overall sound for the purpose of getting it published or recorded more fully.

(informal) An example of a product used for demonstration and then sold at a discount.

(informal) A march or gathering to make a political protest.

(computing, informal) An edition of limited functionality to give the user an example of how the program works.

(computing, demoscene, informal) A non-interactive audiovisual computer program developed by enthusiasts to demonstrate the capabilities of the machine. See demoscene.

(informal) A democrat.

(informal, collective) A demographic group.

(informal) Demolition.

(informal) To record a demo version of a song, usually not intended for commercial release.

(informal) To demonstrate.

(informal) To demolish (especially a house or fixture).