As for the teamster comments, I did not consult with a union to form my opinion.
From the ocregister.com
He came to Kansas from Illinois and by 1859 was a teamster on the Santa Fe Trail.
From the kansas.com
Cole went into business for himself as a teamster, hauling lumber from the mountains.
From the fresnobee.com
Teamster International Vice President Robert Holmes recommended that the locals accept it.
From the time.com
His mother later married Lorenzo Scatena, a teamster who went into the produce business.
From the time.com
Working oxen are taught to respond to the signals of the teamster, bullocky or ox-driver.
From the en.wikipedia.org
It concerns a teamster back in the 1800s who turned the air blue cursing his mule team.
From the orlandosentinel.com
I asked a passing teamster, for want of something better to say, what land was worth there.
From the en.wikipedia.org
She served as a secretary to teamster Jimmy Hoffa many years ago.
From the ocregister.com
More examples
The driver of a team of horses doing hauling
Someone who drives a truck as an occupation
A teamster, in modern American English, is a truck driver. The trade union named after them is the International Brotherhood of Teamsters (IBT or Teamsters), one of the largest unions in the United States.
Teamster was a thoroughbred racehorse owned and bred by Philip Newton. By Known Fact, out of Rosetta Stone, he won back to back Sagaro Stakes which is a Group 3 flat race run over 2 miles at Ascot racecourse. ...
A person who drives a team of animals (such as horses or oxen); a person who drives a truck (see teamster Proper noun); a member of the Teamsters labour union, usually a truck driver
(Teamsters) Local 624 was founded in 1934 and represents over 1,800 members from the Golden Gate Bridge to the Redwoods in Marin, Sonoma, Mendocino and Lake counties.
(The Teamsters) by Steven Brill, 1978, Simon & Schuster, New York, ISBN 0-671-22771-8.
(teamsters) individuals who drive a team of horses, especially in hauling freight.
A person that drove a team of horses, oxen, or mules for hauling.