American English

Definition of nub noun from the Oxford Advanced American Dictionary



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  1. 1[singular] the nub (of something) the central or essential point of a situation, problem, etc. The nub of the matter is that business is declining. She's too selfish to help. That's the nub.
  2. 2[countable] a small, round piece of something a nub of gold
See the Oxford Advanced Learner's Dictionary entry: nub