Butonhole or Buttonhole: How To spell?
The word Butonhole is misspelled against Buttonhole, a noun meaning "The hole or loop in which a button is caught."
Buttonhole has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings bu & onhole which should not be misspelled with single 'T'
Wrong Spelling:  bu-t-onhole  Correct Spelling:  bu-tt-onhole 
Check more misspelled words of Buttonhole to spell it correct.