Emily Dickinson Lexicon

THIRD, n. [thurd.]

1. The third part of any thing. A man takes land and tills it for one third of the produce; the owner taking two thirds.
2. The sixtieth part of a second of time.
3. In music, an interval containing three diatonic sounds; the major composed of two tones, called by the Greeks ditone, and the minor called hemiditone, consisting of a tone and a half. Rousseau. Busby.