What does falsetto mean?

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From our dictionary:

fal•set•to

Pronunciation: (fôl-set'O), [key]
n., pl. -tos,
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.
of, noting, or having the quality and compass of such a voice.

adv.
in a falsetto.