Entry 2 senses · 2 variants Webster, 1913 Flix · IPA /flɪks/ n. n. 01 n. Down; fur. 1. Down; fur.[Obs. or Eng.] 02 n. The flux; dysentery. 1. The flux; dysentery.[Obs.] Phrases & compounds Flix weed — the Sisymbrium Sophia, a kind of hedge mustard, formerly used as a remedy for dysentery.