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 setose
Pronunciation: ˈsēˌtōs
adjective
bearing bristles or setae; bristly

There are 3 definitions of nb in English:

Nb2

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symbol

The chemical element niobium.

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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]

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Definition of NB in: