Available Definitions:
1) a. - Having one meaning only; -- contrasted with equivocal.
2) a. - Having unison of sound, as the octave in music. See Unison, n., 2.
3) n. - Having always the same drift or tenor; uniform; certain; regular.
4) n. - Unequivocal; indubitable.
5) n. - A generic term, or a term applicable in the same sense to all the species it embraces.
6) n. - A word having but one meaning.