purpurous

adjective2

1. •
   (no longer used) Purple.

   • Ebrus – the most beautiful of the rivers – / which in Thrace flowest with a strong sound, / along lands famous for their horses – / thou goest down silent to the purpurous sea near Ainos […] — 1979
2. •
   (no longer used) Of or relating to purpura: Synonym of purpuric.