Wineglasfuls or Wineglassfuls: How To spell?
The word Wineglasfuls is misspelled against Wineglassfuls, which is plural of "Wineglassful"
Wineglassfuls has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings winegla & fuls which should not be misspelled with single 'S'
Wrong Spelling:  winegla-s-fuls  Correct Spelling:  winegla-ss-fuls 
Check more misspelled words of Wineglassfuls to spell it correct.