staple fiber staple fiber /ˈstæpəl ˈfaɪbər/

noun

1. [American] A natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn  ( staple , staple fiber [American] , staple fibre [Canadian, British] )
   a natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn
    Staple fibers vary widely in length
   staple fibers vary widely in length