Definition of core:

• ( Jude 1:11 ) [ KORAH, 1]
• To remove the center, or core, from, as an apple.
• remove the core or center from; " core an apple"
• 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"
• an organization founded by James Leonard Farmer in 1942 to work for racial equality
• 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
• a small group of indispensable persons or things; " five periodicals make up the core of their publishing program"
• the center of an object; " do not eat the apple core"
• the central part of the earth
• a cylindrical sample of soil or rock obtained with a hollow drill
• the center of an object; " the ball has a titanium core"
• A body of individuals; an assemblage.
• A miner's underground working time or shift.
• A Hebrew dry measure; a cor or homer.
• The heart or inner part of a thing, as of a column, wall, rope, of a boil, etc.; especially, the central part of fruit, containing the kernels or seeds; as, the core of an apple or quince.
• The center or inner part, as of an open space; as, the core of a square.
• The most important part of a thing; the essence; as, the core of a subject.
• The prtion of a mold which shapes the interior of a cylinder, tube, or other hollow casting, or which makes a hole in or through a casting; a part of the mold, made separate from and inserted in it, for shaping some part of the casting, the form of which is not determined by that of the pattern.
• A disorder of sheep occasioned by worms in the liver.
• The bony process which forms the central axis of the horns in many animals.
• To take out the core or inward parts of; as, to core an apple.
• To form by means of a core, as a hole in a casting.
• A mass of iron, usually made of thin plates, upon which the conductor of an armature or of a transformer is wound.
• Corer.
• The central mass of necrotic tissue in a boil.
• The heart: the inner part of anything, especially of fruit.
• Heart, or central part.
• The heart, as of an apple, containing the seeds; center; heart; pith.
• The heart or inner part of anything; the central radical part.
• The inner part or heart of anything, as of fruit; among founders, the centre part of a mould, meant to keep hollow any casting in metal.

Usage examples for core

1. All life was rotten, rotten to the core!  Colorado Jim by George Goodchild

2. I was concerned to the core.  Right Ho, Jeeves by P. G. Wodehouse

3. Hence the core consists of the air inside of the coils.  The Radio Amateur's Hand Book by A. Frederick Collins

4. The hardwood core, once we could get it lit, would make a fine hot fire.  Four-Day Planet by Henry Beam Piper