Main Entry:

²third

Function:

noun

Date:

14th century

1: one of three equal parts of something <a third of the pie>2 a — see number table b: one that is next after second in rank, position, authority, or precedence <the third in line>3 a: the musical interval embracing three diatonic degrees b: a tone at this interval ; specifically : mediant c: the harmonic combination of two tones a third apart4plural : merchandise whose quality falls below the manufacturer's standard for seconds5: third base6: the third forward gear or speed especially of a motor vehicle