Wiktionary
n. 1 an adult male voice or voice part higher than the tenor 2 (context music English) a singer with such a voice
Usage examples of "counter-tenor".
On her right Rudolpho and his boyfriend were busy pulling grey hairs out of each other's heads like chimpanzees and the only man who'd come dressed as Anthony was a counter-tenor who displayed a cock the size of a three-year-old boy when his toga fell open.
His horse-legs bore him cantering away down the lane, and when he was out of sight around the bend his counter-tenor voice was once more heard raised in song.
But Stephen's most valuable recollection of the dinner was Hairabedian's delighted face, his twinkling eyes, and his counter-tenor soaring above the thunder, declaring that he too, like a true British sailor, should roam over all the salt seas.