(redirected from Laughing Hyenas)Also found in: Thesaurus, Wikipedia. laughing hyenan (Animals) the spotted hyena. See hyenaCollins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014...