Wiktionary
vb. To perpetrate a gang rape.
WordNet
v. rape (someone) successively with several attackers; "The prisoner was gang-raped"
Usage examples of "gang-rape".
That was a horror, because the pirates tied up Hope and their father, then gang-raped Faith while all of them watched.
Kohler and Brandeis, he was sure, would do anything, anything to keep their wives from being gang-raped and tortured one by one before their eyes.
Rosie said, her face hardening with anger that aged her ten years in an instant, "she could've been gang-raped, stabbed by some twelve-year-old punk wrecked on crack, maybe even shot dead by a carjacker in her own driveway.
No one ever got knifed or gang-raped at Atascadero, though the inmates did have to maintain a three-acre truck garden.
Better to have one unreported and unvindicated rape than to rock the very foundations of West Point, to cause doubts about a co-ed academy, to cast suspicion on a thousand innocent men who did not gang-rape a woman that night.