Silon or Sillon: How To spell?
The word Silon is misspelled against Sillon, a noun meaning "A work raised in the middle of a wide ditch, to defend it."
Sillon has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings si & on which should not be misspelled with single 'L'
Wrong Spelling:  si-l-on  Correct Spelling:  si-ll-on 
Find more incorrect spellings of Sillon to spell right way.