Hiling or Hilling: How To spell?
The word Hiling is misspelled against Hilling, a noun meaning "The act or process of heaping or drawing earth around plants."
Hilling has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings hi & ing which should not be misspelled with single 'L'
Wrong Spelling:  hi-l-ing  Correct Spelling:  hi-ll-ing 
Find more wrongly spelled words of Hilling to spell it well.