Definitions:
- An object made or shaped by human hand.
- An object, such as a tool, weapon or ornament, of archaeological or historical interest, especially such an object found at an archaeological excavation.
- Something viewed as a product of human conception or agency rather than an inherent element.
- A structure or finding in an experiment or investigation that is not a true feature of the object under observation, but is a result of external action, the test arrangement, or an experimental error.
- An object made or shaped by some agent or intelligence, not necessarily of direct human origin.