Sil or Sill: How To spell?
The word Sil is misspelled against Sill, a noun meaning "A piece of timber across the bottom of a canal lock for the gates to shut against."
Sill has double 'll' in the end mispronounced as 'l'Remember double 'LL' appears in the end of this word which should not be misspelled with single 'L'
Wrong Spelling:  si-l  Correct Spelling:  si-ll 
Find more wrongly spelled words of Sill to spell it well.