/fawl set"oh/ , n. , pl. falsettos , adj. , adv.
n.
1. an unnaturally or artificially high-pitched voice or register, esp. in a man.
2. a person, esp. a man, who sings with such a voice.
adj.
3. of, noting, or having the quality and compass of such a voice.
adv.
4. in a falsetto.
[ 1765-75; fals ( o ) ( falsus FALSE) + -etto -ET ]