Culis or Cullis: How To spell?

The word Culis is misspelled against Cullis, a noun meaning "A gutter in a roof; a channel or groove."

Cullis has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings cu & is which should not be misspelled with single 'L'
Wrong Spelling:  cu-l-is 
Correct Spelling:  cu-ll-is 
Check more misspelled words of Cullis to spell it correct.