man·trap (m?n?tr?p?)n.1. A trap set to catch trespassers or poachers.2. Slang A sexually aggressive woman who has multiple male sexual partners and is considered to be scheming or manipulative.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.mantrap (?mæn?træp) na snare for catching people, esp trespassersCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014