so·pran·o 
(sə-prănō, -pränō)
(sə-prănō, -pränō)n. pl. so·pran·os
1. The highest singing voice of a woman or young boy.
2. A singer having such a voice.
3. The tonal range characteristic of a soprano.
4. An instrument that sounds within this range.
5. A vocal or instrumental part written within this range.
[Italian, from sopra, above, from Latin suprā; see uper in the Appendix of Indo-European roots.]