Dictionary

A demonstration or visual explanation.

Example: The professor prepared a demo to help her class understand the topic.

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

Example: After hearing the demo the record label approved funding to record the song with a full band.

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

A march or gathering to make a political protest.

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

Example: The band demoed thirty songs. Their manager thought that ten of the songs would make a good record.

To demonstrate.

To demolish (especially a house or fixture).