Definition of acorn in English:

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Pronunciation: /ˈeɪkɔːn/


The fruit of the oak, a smooth oval nut in a rough cup-like base.
Example sentences
  • Collect interesting bits of natural objects, such as bark, leaves, conkers and acorns to label and display at home.
  • Chipmunks, like other ground squirrels, eat seeds and acorns of woody plants, nuts, grains, and fruit.
  • I have every intention of having my own child plant an acorn from my tree to continue the tradition.


Old English æcern, of Germanic origin; related to Dutch aker, also to acre, later associated with oak and corn1.

  • An Old English word, related to acre (Old English) and meaning ‘fruit of the open land or forest’. It was later applied to any fruit, then subsequently restricted to the most important fruit produced by the forest, the acorn. The spelling of the word, originally aecern, evolved into its modern form because people thought the word must have something to do with oak and corn.

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