The word Wineglasfuls is misspelled against Wineglassfuls, which is plural of "Wineglassful"
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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.