the world > relative properties > number > specific numbers > one > [noun] > one thing > one of two (3)
Chiefly Philosophy. Usually with the. Frequently with capital initial. That which is the counterpart or converse of something specified or implied…
n. An unpaired individual thing; an odd one. In roulette (with pronunciation/ɛ̃pɛr/), an odd number, or a number marked ‘impair’.
A single thing, as distinct from a pair.