dock·er 1 (d?k??r)n. A dockworker; a longshoreman.dock·er 2 (d?k??r)n. One that docks something, such as the tail of an animal.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.docker (?d?k?) n (Professions) Brit a man employed in the loading or unloading of ships. US and Canadian equivalent: longshoreman See also stevedoredocker (?d?k?) n (Veterinary Science) a person or thing that docks something, such as the tail of a horseCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014dock?er1 (?d?k ?r) n. a longshoreman. [1755?65] dock?er2 (?d?k ?r) n. a person or device that docks tails. [1800?10] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.dockerlongshoremanDictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited