Also found in: Thesaurus, Idioms, Encyclopedia.
A male cat.
intr.v. tom·cat·ted, tom·cat·ting, tom·cats Slang
To be sexually active with more than one partner. Used of men.
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.
(of a man) the practice of being sexually promiscuous or having many sexual partners
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014