Definitions
1.nounOne who demonstrates anything, or proves beyond doubt.
2.nounThe forefinger.
3.nounOne who takes part in a demonstration; a protester.
4.nounOne who demonstrates products in a retail environment; a merchandiser.
5.nounAn item, particularly a vehicle, used in demonstrations to a customer or user.
6.nounAn assistant to a lecturer.
7.nounOne who teaches anatomy from the dissected parts.