Coulise or Coulisse: How To spell?
The word Coulise is misspelled against Coulisse, a noun meaning "A piece of timber having a groove in which something glides."
Coulisse has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings couli & e which should not be misspelled with single 'S'
Wrong Spelling:  couli-s-e  Correct Spelling:  couli-ss-e 
Check more misspelled words of Coulisse to spell it correct.