noun: a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
noun: a Latin phrase (or its abbreviation) used to indicate that special attention should be paid to something; "the margins of his book were generously supplied with pencilled NBs"
Length: 2 letters
Scrabble value: 4
Words with Friends value: 6
Literati value: 3
TWL (USA): Found
SOWPODS (UK): Found
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