Casimere or Cassimere: How To spell?
The word Casimere is misspelled against Cassimere, a noun meaning "A thin, twilled, woolen cloth, used for men's garments."
Cassimere has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings ca & imere which should not be misspelled with single 'S'
Wrong Spelling:  ca-s-imere  Correct Spelling:  ca-ss-imere 
Find more wrongly spelled words of Cassimere to spell it well.