Bilhead or Billhead: How To spell?

The word Bilhead is misspelled against Billhead, a noun meaning "A printed form, used by merchants in making out bills or rendering accounts."

Billhead has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings bi & head which should not be misspelled with single 'L'
Wrong Spelling:  bi-l-head 
Correct Spelling:  bi-ll-head 
Find more wrongly spelled words of Billhead to spell it well.