A mechanism of geared wheels driven by a wound spring, as in a mechanical clock.(noun)
Like clockwork With machinelike regularity and precision; perfectly: The project proceeded like clockwork. (idiom)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "clockwork" in a sentence
"The clockwork is radiocontrolled and the timedots (the dots that mark the hours) comes in 3 different sizes and colours."
"And in the trained-animal world, where turns must go off like clockwork, is little or no space for persuasion."
"You'll note that in these and many other cases the joy of seeing these works of art appear every month like clockwork is short-lived."