Nb is the chemical symbol of niobium.
NB stands for Nominal Bore.
Niobium
I am not quite sure what you mean by "nb", but I don't think it's a unit of length.
nb nb kj:)
I suspect that NB stands for the Latin phrase nota bene,whick means 'note well'.
NOTA bENE
nicky butler very expensive !!
In grammar, "NB" stands for "nota bene," which is a Latin phrase meaning "note well." It is often used to draw attention to important information or to emphasize a particular point in written text.
There are about 33.980 miles between Florenceville, NB and Plaster Rock, NB.
Communist, Bolshevik. NB They are not exact equivalents, but close.
destraillar (NB extra 'i') = to unleash, from which destraillo = I unleash