Paillase or Paillasse: How To spell?
The word Paillase is misspelled against Paillasse, a noun meaning "An under bed or mattress of straw."
Paillasse has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings pailla & e which should not be misspelled with single 'S'
Wrong Spelling:  pailla-s-e  Correct Spelling:  pailla-ss-e 
Find more wrongly spelled words of Paillasse to spell it well.