Any of the flowering plants of the genus Myosotis, mostly with a small five-petalled blue flower. / A light tint of blue, the color of the flower.

(music) A musical note, indicated on a score in smaller type with or without a slash through it, played to ornament the melody rather than as part of it. Its note value does not count as part of the total time value of the measure it appears in.

(by extension) Especially in European countries: a room or area in a household set apart for the care of children.

(computing) A hardware-level interrupt that cannot be masked by software, such as a memory parity error.

Alternative form of n.b.

Abbreviation of New Brunswick. / Abbreviation of North Britain.

A structure built by a bird as a place to incubate eggs and rear young. / A place used by another mammal, fish, amphibian or insect, for depositing eggs and hatching young.

(intransitive, of animals) To build or settle into a nest. / (intransitive) To settle into a home. / (intransitive) To successively neatly fit inside another.

(mathematics) An integer / (mathematics) A natural number (positive or non-negative integer)

(mathematics) Of or relating to number theory.