gearman means someone who is responsible for the maintenance of equipment belonging to a shipping company, railroad, trucking company, or colliery.
Etymology
From gear + -man.
noun
- Someone who is responsible for the maintenance of equipment belonging to a shipping company, railroad, trucking company, or colliery.“As gearman I have to see that the brakes are in perfect order; cars are in running order on 23d Street line at present.”