Definition of bast in US English:


(also bast fiber)


  • 1Fibrous material from the phloem of a plant, used as fiber in matting, cord, etc.

    • ‘Willow, lime and again oak trees give some of the most useful bast fibres.’
    • ‘It wasn't unknown for the ribs for example to be lashed in place with bast fibre cords, that were soaked in pitch to preserve them.’
    • ‘They are made from papyrus root, bast fiber, and banana leaves and are decorated with mud dyes in elaborate patterns.’
    • ‘Another was the lime tree whose fibrous inner bark, bast, was used for a number of purposes.’
    • ‘Linen is from flax, a bast fiber taken from the stalk of the plant.’
    rind, skin, peel, sheath, covering, outer layer, coating, casing, crust
    View synonyms
    1. 1.1Botany The phloem or vascular tissue of a plant.
      • ‘There was a clear deficiency of bast fibre along the length of the mutant stem.’
      • ‘Bast fibers come from the phloem tissues of dicotyledonous plants.’
      • ‘Ramie is also similar to linen and is a bast of plant fiber.’
      • ‘The four groupings are: seed-hair fibers, leaf fibers, bast fibers, and miscellaneous fibers.’
      • ‘The phloem of some stems also contains thick-walled, elongate fiber cells which are called bast fibers.’


Old English bæst; related to Dutch bast, German Bast; of unknown origin.