Herison or Herisson: How To spell?
The word Herison is misspelled against Herisson, a noun meaning "A beam or bar armed with iron spikes, and turning on a pivot; -- used to block up a passage."
Herisson has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings heri & on which should not be misspelled with single 'S'
Wrong Spelling:  heri-s-on  Correct Spelling:  heri-ss-on 
Find more incorrect spellings of Herisson to spell right way.