Definition of Core

Noun

• a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil
  
• the chamber of a nuclear reactor containing the fissile material where the reaction takes place
  
• (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data
  now superseded by semiconductor memories
  "each core has three wires passing through it, providing the means to select and detect the contents of each bit"
  - magnetic core
• the central meaning or theme of a speech or literary work
  effect essence burden gist
• an organization founded by James Leonard Farmer in 1942 to work for racial equality
  - congress of racial equality
• a cylindrical sample of soil or rock obtained with a hollow drill
  
• the choicest or most essential or most vital part of some idea or experience
  "the gist of the prosecutor's argument"
  "the heart and soul of the Republican Party"
  "the nub of the story"
  kernel substance center centre essence gist heart - heart and soul inwardness marrow meat nub pith sum - nitty gritty
• the central part of the Earth
  
• the center of an object
  "the ball has a titanium core"
  
• a small group of indispensable persons or things
  "five periodicals make up the core of their publishing program"
  nucleus - core group

Verb

• remove the core or center from
  "core an apple"
  

• Scrabble® score of the core (6)
• Word Chums® score of the core (9)
• Words With Friends® score of the core (7)