(now rare) A native inhabitant of a place, country etc. / (music) A note that is not or is no longer to be modified by an accidental. / (music) The symbol ♮ used to indicate such a natural note.

(colloquial, dialect) Naturally; in a natural manner.

The belief in or practice of going nude in social settings, often in mixed-gender groups, specifically either in cultures where this is not the norm or for health reasons.

(mathematics) The set of positive integers, {1, 2, 3, ...}. / (mathematics, computer science) The set of non-negative integers, {0, 1, 2, 3, ...}.

(mathematics) a positive integer {1, 2, 3, ...} / (mathematics) a non-negative integer {0, 1, 2, ...}

(music) A musical grammar which arises spontaneously in a musical culture (as opposed to an artificial grammar).

Belonging to one by birth. / Characteristic of or relating to people inhabiting a region from prehistoric times.

A person who is native to a place; a person who was born in a place.

A male biological child, whether legitimate or illegitimate, as opposed to one adopted. / An illegitimate son.

(evolutionary theory) A process by which heritable traits conferring survival and reproductive advantage to individuals, or related individuals, tend to be passed on to succeeding generations and become more frequent in a population, whereas other less favourable traits tend to become eliminated; the differential survival and reproduction of phenotypes.