There are 3 definitions of nb in English:

nb1

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abbreviation

Cricket
No-ball.

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Word of the day internecine
Pronunciation: ˌɪntəˈniːsʌɪn
adjective
destructive to both sides in a conflict

There are 3 definitions of nb in English:

Nb2

Line breaks: Nb

symbol

The chemical element niobium.

Definition of nb in:

There are 3 definitions of nb in English:

NB3

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abbreviation

1New Brunswick (in official postal use).
1.1Nota bene; take special note.
[Latin]

Definition of nb in: