WordWeb Online

1. A small lump or protuberance
   - nubble
    
2. A small piece
   "a nub of coal";
   - stub
    
3. The choicest or most essential or most vital part of some idea or experience
   "the nub of the story";
   - kernel, substance, core, center [US], centre [Brit, Cdn], essence, gist, heart, heart and soul, inwardness, marrow, meat, pith, sum, nitty-gritty

Derived forms: nubs

Type of: bulge, bump, cognitive content, content, excrescence, extrusion, gibbosity, gibbousness, hump, jut, mental object, part, piece, prominence, protrusion, protuberance, swelling

Encyclopedia: Nub