Belonging to one.

Contraction of one is.

(uncountable) State of being one or undivided; unity. / (countable) The product of being one or undivided.

(chiefly Britain, Commonwealth of Nations except Canada, Ireland) Alternative form of no one

Not any person or thing whatsoever.

(colloquial) A particularly special or compatible person or thing. / (colloquial) A particular person destined to save the universe or world; the chosen one.

The person or thing.

A specified object, thing or person (especially one nearby or known).

A specified object, thing or person (especially one further away/over there or known or mentioned later).

(often with with) In harmony or unity. / (often with with) In agreement, unanimous, of the same opinion. / (archaic) Into a state of harmony, friendship or reconciliation.