DefinitionA <MACHINE> is an <ARTEFACT> that is powered, consisting of two or more interrelated parts, each having a definite function, and that is constructed to achieve a particular goal
Machines are usually powered by mechanical, chemical, thermal or electrical means, and are frequently motorized.|Historically, a powered tool also required moving parts to be classified as a machine; however, the advent of electronics technology has led to the development of powered tools without moving parts that are considered machines.|http://en.wikipedia.org/wiki/Machine|See also Oxford English Dictionary, machine 4.a
