Of or relating to machines or tools: mechanical skill. Operated or produced by a mechanism or machine: a mechanical toy dog. Of, relating to, or governed by mechanics. Performed or performing in an impersonal or machinelike manner; automatic: a droning, mechanical delivery of the speech. Relating to, produced by, or dominated by physical forces: the mechanical aspect of trumpet playing. Philosophy Interpreting and explaining the phenomena of the universe by referring to causally determined material forces; mechanistic. Of or relating to manual labor, its tools, and its skills. Printing A layout consisting of type proofs, artwork, or both, exactly positioned and prepared for making an offset or other printing plate.