- The definition of a chainman is someone who works with a surveyor to measure distances.
An example of a chainman is the man in the orange vest who helps measure a distance using a chain or tape measure.
chainman definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
noun pl. chainmen
a surveyor's assistant who measures distances with a tape measure or surveyor's chain: chainmen work in pairs
chainman definition by American Heritage Dictionary
Either of the two persons who hold a surveyor's measuring chain.