Hersilon or Hersillon: How To spell?

The word Hersilon is misspelled against Hersillon, a noun meaning "A beam with projecting spikes, used to make a breach impassable."

Hersillon has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings hersi & on which should not be misspelled with single 'L'
Wrong Spelling:  hersi-l-on 
Correct Spelling:  hersi-ll-on 
Find more incorrect spellings of Hersillon to spell right way.