#1 soprano n. a female singer. wn
#2 soprano s. [treble] having or denoting a high range; "soprano voice"; "soprano sax"; "the boy still had a fine treble voice"; "the treble clef". wn
#3 soprano n. the highest female voice; the voice of a boy before puberty. wn
#4 soprano n. [treble] the pitch range of the highest female voice. wn
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