Staorhead or Stairhead: How To spell?

The word Staorhead is misspelled against Stairhead, a noun meaning "The head or top of a staircase."

Word contains consecutive vowels 'AI' in between alphabets st & rhead is misspelled as 'AO'
Wrong Spelling:  st-ao-rhead 
Correct Spelling:  st-ai-rhead 
Find more incorrect spellings of Stairhead to spell right way.

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