horizontal union WORD ORIGIN noun a labor union organized by skills or trades of its members rather than by industries. Liberaldictionary.com
Origin of horizontal union First recorded in 1945–50 Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 British Dictionary definitions for horizontal union horizontal union noun another name (esp US) for craft union Collins English Dictionary – Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012