Boltheyd or Bolthead: How To spell?

The word Boltheyd is misspelled against Bolthead, a noun meaning "A long, straight-necked, glass vessel for chemical distillations; -- called also a matrass or receiver."

Bolthead has vowels 'ea' together mispronounced as 'ey'
Word contains consecutive vowels 'EA' in between alphabets bolth & d is misspelled as 'EY'
Wrong Spelling:  bolth-ey-d 
Correct Spelling:  bolth-ea-d 
Find more incorrect spellings of Bolthead to spell right way.

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