Spirituel \spir-i-choo-EL\ , adjective;
1. Showing or having a refined and graceful mind or wit
2. Light and airy in movement; ethereal
The OED says that this word comes from French spirituel and indicates its etymology is related to that of spiritual. Spiritual is much older than spirituel, it is attested to the 1300's while spirituel is first attested in 1673. Both ultimately come from Old French spirituel which derives from Latin spiritualis. Spiritualis is from spiritus, which means "of breathing, of the spirit".
Today's word and the first definition were both taken from Dictionary.com's 'Word of the Day' for Sunday, January 16
Etymologies come from the Oxford English Dictionary and/or Etymonline.com