demonstration

noun7

1. •
   The act of demonstrating; showing or explaining something.
2. •
   a march or meeting in a public place where people show what they think about something

   • Demetriez McCants stood in a protest holding a placard saying “No justice, no peace”. He was a friend of Christopher Thompkins, and had joined a demonstration of his supporters and relatives. — 2026
3. •
   An event at which something will be demonstrated.

   • I have to give a demonstration to the class tomorrow, and I'm ill-prepared.
4. •
   A proof.

   • He read the proposition. […] So he reads the demonstration of it, which referred him back to such a proposition,; which proposition he read. — 1697
5. •
   Expression of one's feelings by outward signs.
6. •
   A show of military force.
7. •
   (slang) A prisoner's act of beating up another prisoner.