fiberfill
/ˈfaɪbərˌfɪl/
noun
- A soft, synthetic material used as padding or stuffing in pillows, cushions, quilts, and stuffed toys.
- Many sleeping bags use fiberfill for insulation because it is lightweight and warm.
- She used fiberfill to stuff the homemade teddy bear.
- The pillow was filled with high-quality fiberfill that kept its shape.