Definition of "nub"

nub¹

/nʌb/

noun
plural nubs
1. (obsolete) The innermost section of a chrysalis in a silk cocoon.
2. A small lump or knob.
3. The essence or core of an issue, argument etc.
  Quotations
  Here the narrator bursts into explosion after explosion of thunderous horse-laughter, repeating that nub from time to time through his gaspings and shriekings and suffocatings.
  1897, Mark Twain [pseudonym; Samuel Langhorne Clemens], How to Tell a Story
  But surely the males are no problem? Aha...no we're approaching the nub.
  2000, Bill Oddie, Gripping Yarns, page 115
4. (slang) The clitoris.
  Quotations
  “ — and then rub her nub with the bridge of your nose, right where the nerve will drive her straight to the ceiling!”
  2007, Melissa MacNeal, Hot for It‎, page 198
  When he used his fingers to rub her nub, he didn't have to wait anymore. She exploded for the second time that morning,...
  2008, Arianna Hart, A Man for Marley‎, page 82
  He stroked her, using her movements to increase the pressure on her nub, catching her between his fingers.
  2010, Beverly Rae, Wild Cat‎, page 81
5. (computing, colloquial) A pointing stick.
verb
third-person singular simple present nubs, present participle nubbing, simple past and past participle nubbed
1. (baseball) To hit the ball weakly.
2. To push; to nudge.
3. To beckon.

/nuːb/