sex shopn. A business that sells items related to sexual gratification, such as sex toys and erotica.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.sex shop n a. a shop selling aids purporting to increase the pleasurableness of sexual activity b. a shop selling erotica and pornographic material Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014