From Longman Dictionary of Contemporary Englishgang rapeˈgang ˌrape noun [countable] SCCSEX/HAVE SEX WITHan occasion when several men attack a woman and force her to have sex with them
Examples from the Corpus
gang rape• It follows Operation Orchid, a police investigation into missing boys after a gang rape murder in London.• Often, they said, a captive woman would try to attach herself to one leader to avoid repeated gang rape. 