from
The Collaborative International Dictionary of English v.0.48
Third \Third\, n.
1. The quotient of a unit divided by three; one of three
equal parts into which anything is divided.
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2. The sixtieth part of a second of time.
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3. (Mus.) The third tone of the scale; the mediant.
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4. pl. (Law) The third part of the estate of a deceased
husband, which, by some local laws, the widow is entitled
to enjoy during her life.
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{Major third} (Mus.), an interval of two tones.
{Minor third} (Mus.), an interval of a tone and a half.
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