Dictionary.com
definitions

filasse

[fi-las]
noun
  1. any of various vegetable fibers, other than cotton, processed for manufacture into yarn.

Origin of filasse

1855–60; < French; Old French filace < Vulgar Latin *filācea, equivalent to Latin fīl(um) thread + -ācea, feminine of -āceus; see -aceous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018