noun
: a model of an actual or proposed machine that can do on a small scale the work which the machine itself does or is expected to do
a working model of a freight locomotive
noun
: a model of an actual or proposed machine that can do on a small scale the work which the machine itself does or is expected to do
a working model of a freight locomotive
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012