core (EN)

noun, verb, adjective

noun “core”

1. the most important part of something
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   At the core of their success was a dedicated team and hard work.
2. the central part of a physical object
   The core of a pencil is commonly called “lead”.
3. the central part of a fruit that contains the seeds
   After eating the apple, she tossed the core into the compost bin.
4. (in anatomy) the muscles of the abdomen and lower back
   Daily exercises can help you build a stronger core and reduce back pain.
5. (in computing) an individual processor within a computer's central processing unit
   Modern video games often require a CPU with multiple cores to run smoothly.
6. (in geology) the central part of the Earth or another planet
   Scientists believe that the core is responsible for the Earth's magnetic field.
7. (in geology) a cylindrical sample of rock or soil obtained by drilling
   The team extracted a core from the ice sheet to study climate changes over time.
8. (in nuclear physics) the central part of a nuclear reactor where nuclear reactions occur
   The engineers monitored the temperature of the reactor core closely.
9. (in manufacturing) the internal part of a mold that shapes the inside of a product
   During casting, molten metal is poured around a core to form hollow spaces in the final product.

verb “core”

1. to remove the central part of a fruit, especially the seeds
   Before baking the apples, she cored them and filled them with cinnamon.
2. to extract a cylindrical sample from something using a drill
   The engineers cored the rock to analyze its composition.

adjective “core”

1. forming the most important or central part of something
   Mathematics and English are core subjects in the school curriculum.