八分之一

bāfēnzhīyī
one eighth

CEDICT

Entry Composition

1 八分 bāfēn
  1. (calligraphy) bafen clerical script
  2. bafen clerical script
2 之一 zhīyī
  1. one of (sth)
  2. one out of a multitude
  3. one (third, quarter, percent etc)