nub

• 名词，指小凸起或小块，也指事物的核心或要点。

A noun referring to a small lump or protuberance, a small piece, or the central and most essential part of an idea or experience.

1. Small lump or protuberanceB2formal

   A small, rounded projection or bump on a surface.

   小凸起

   • The fabric had a small nub where the thread was tied.
   • He felt a nub on the tree trunk where a branch had been cut.
   • The surface was smooth except for a tiny nub near the edge.

   同义词bumpknoblumpnodenodulenubbleprojectionprotuberancestudswelling

   反义词dentdepressionhollowindentation

2. Small pieceB2informal

   A small fragment or chunk of something.

   小块

   • She ate a nub of cheese before dinner.
   • He found a nub of coal in the fireplace.
   • The child held a nub of crayon in his hand.

   同义词bitchunkfragmenthunklumpmorselnuggetpiecescrap

   反义词entiretywhole

3. Core or essenceB2informal

   The central or most important part of an idea, argument, or experience.

   核心

   • The nub of the problem is a lack of funding.
   • After hours of discussion, we finally got to the nub of the issue.
   • The nub of her speech was about the importance of community.

   同义词corecruxessencegistheartkernelnucleuspithpointsubstance

   反义词adjunctperipherysurface