Weughboard or Weighboard: How To spell?

The word Weughboard is misspelled against Weighboard, a noun meaning "Clay intersecting a vein."

Word contains consecutive vowels 'EI' in between alphabets w & ghboard is misspelled as 'EU'
Wrong Spelling:  w-eu-ghboard 
Correct Spelling:  w-ei-ghboard 
Check more misspelled words of Weighboard to spell it correct.