Runic

Runic \ROO-nik\ , adjective;
1. Having some secret or mysterious meaning
2. Consisting of or set down in runes
3. Referring to an interlaced form seen on ancient monuments, metalwork, etc., of the northern European peoples

This word dates to the 1660's from Modern Latin runicus, which was taken from Old Norse run. Old Norse run is related to Old Engish run ("secret, mystery, dark mysterious statement" and "runic letter"), which derives from Proto-Germanic *runo. *Runo, along with most technical terms of magic in Germanic and Celtic, derives from Proto-Indo-European *run-no-

Today's word and the first definition were both taken from Dictionary.com's 'Word of the Day' for Friday, August 19
Etymologies come from the Oxford English Dictionary and/or Etymonline.com