Billethad or Billethead: How To spell?

The word Billethad is misspelled against Billethead, a noun meaning "A round piece of timber at the bow or stern of a whaleboat, around which the harpoon lone is run out when the whale darts off."

Billethead has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets billeth & d is misspelled as 'A'
Wrong Spelling:  billeth-a-d 
Correct Spelling:  billeth-ea-d 
Find more wrongly spelled words of Billethead to spell it well.

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