The hazels (Corylus) are a genus of deciduous trees and large shrubs native to the temperate northern hemisphere. The genus is usually placed in the birch family Betulaceae, though some botanists split the hazels (with the hornbeams and allied genera) into a separate family Corylaceae.
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hazel The plant that produces the hazelnut. Botanical name: Corylus avellana.
hazel A deep red-orange colour, including the colour of hazelnuts; RAL Code 8011.