What is another word for "three"?

Roget's Thesaurus (1911) lists these synonyms for "three": alone, alter, among, animal, area, centesimal, certain, cube, decimal, decimate, decimation, deficit, dimensional, divide, division, duodecimal, few, fifth, five, fold, form, four, fundamental, geographical, hundredth, inter, into, large, leash, majority, millesimal, more, multitude, non, not, number, object, one, other, part.