Wiktionary
vb. 1 (context intransitive literally English) To perform vocal music in a higher pitch than alto. 2 (context intransitive idiomatic euphemistic of a man English) To suffer castration or an injury to the testicles.
Usage examples of "sing soprano".
Smith was sure that it would take rape to put an inferior child into Dora-and the rapist might sing soprano the rest of his days.
You will organise and execute a rescue of your agent Aubrey, who will be spirited to Moscow by Aeroflot and then subsequently appear at some kind of staged interview with selected members of the Soviet and Western press - my God, man, you have the drugs to make him do handstands and sing soprano for the cameras if you care to use them!
It had been fun to sing soprano for a while, but he was glad to have his own voice back, though not as glad as Mudge.
Somebody had once told Randolph that Orbus could sing soprano solos from Verdi's operas capable of bringing tears to your eyes provided you were not required to look at him while he sang.
If you ever tell anyone I will kill them on your behalf again, I'll make sure you sing soprano for the rest of your life.