1 [U] parts of plants that you eat which are good for you because they help to move food quickly through your body （食物中的）纤维素: Wholemeal bread is high in fibre. 全麦面包含有丰富的纤维素。

2 [C,U] a material or a substance that is made from natural or artificial threads 纤维质料: natural fibres (=for example, cotton and wool) 棉、羊毛等是天然纤维(natural fibre) man-made/synthetic fibres(=for example, nylon, polyester, etc) 尼龙、聚酯等是人造纤维(man-made fibre)或合成纤维(synthetic fibre)

3 [C] one of the thin threads which form a natural or artificial substance 纤维: cotton/wood/nerve/muscle fibres 棉╱木╱神经╱肌肉纤维