Definition of acorn in English:



  • The fruit of the oak tree, a smooth oval nut in a rough cup-shaped base.

    • ‘In fall and winter they feed principally on acorns, other nuts, seeds, and fruits.’
    • ‘While the caterpillar will not kill the oak tree, the loss of leaves means the trees produce fewer acorns.’
    • ‘Chipmunks, like other ground squirrels, eat seeds and acorns of woody plants, nuts, grains, and fruit.’
    • ‘She would come back at dusk with arms full of small frogs, or large insects, with wild fruit and berries, or acorns and mushrooms.’
    • ‘The acorn harvest was an important ritual, for acorns were an important part of the Indians' diet.’
    • ‘I have every intention of having my own child plant an acorn from my tree to continue the tradition.’
    • ‘To recover they need to feast on conkers, acorns and sweet chestnuts, which is why visitors are exhorted not to gather these items.’
    • ‘I leave acorns and leaves and nests alone when I come across them.’
    • ‘Inside, the wooden kauri architraves and sweeping stairs were all carved with acorns and oak leaves.’
    • ‘In winter, they feed on berries, seeds, and acorns, in trees or shrubs or on the ground.’
    • ‘Imagine a sturdy, bountiful oak tree producing acorns that will germinate successive oak trees.’
    • ‘The old bur oak's leaves are now large and leathery, the green acorns nearly the size of golf balls.’
    • ‘Add an acorn, or pinecone and you have a very impressive napkin ring.’
    • ‘We picked up horse chestnuts on the corner for the feel and look of them, and then gathered acorns and hazelnuts and beechnuts in the woods.’
    • ‘Decorate your house by bringing the outside in, using pinecones and acorns!’
    • ‘The church will be decorated with oak leaves and acorns to bring strength and comfort to the bereaved and injured.’
    • ‘Hardy and wily, the pigs snuffle out acorns, chestnuts, roots and grass.’
    • ‘Berries, acorns, and other seeds and nuts make up most of the Band-tailed Pigeon's diet.’
    • ‘Collect interesting bits of natural objects, such as bark, leaves, conkers and acorns to label and display at home.’
    • ‘Children can look out for other large tree seeds such as beech masts and acorns which can be sown in the same way as the conkers.’


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