Meaning of teamsters' union in English:
teamsters' union
noun
North AmericanAny of various trade unions representing teamsters; specifically (in form Teamsters Union) the union for this purpose established in 1903 (officially the International Brotherhood of Teamsters), whose membership now also includes a wide range of manual and professional workers.
Origin
Late 19th century; earliest use found in Delphi (Indiana) Journal.
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