What is the meaning of Yardman?

A worker in any of several types of yard, as:

  1. A worker in a railyard.

    A worker in a railyard.

    A farm worker assigned to the farmyard of a large farm, working at hostler duties (harnessing and hitching teams), loading and unloading wagons, feeding, and so on.

    A laborer hired to do outdoor work.

    Source: wiktionary.org