(slang, usually vulgar)Synonym of balls(“testicles; courage, masculinity”).
2005, Total Overdose, spoken by Ramiro “Ram” Cruz (Simon Prescott as Cesar Morales and Daniel E. Mora), Square Enix Europe; Eidos Interactive, via Deadline Games and Square Enix:
Stepping right into a trap... Your biggest problem is that you got big cojones but nothing in your brains. I think Freud would have something to say about your obsession with my big cojones.
2013 July 10, Daniel Prendergast, “‘You don’t have the cojones’: 54-year-old woman fronts up to would-be muggers who pointed gun at her chest”, in New York Post, archived from the originalon2 August 2016: