Trad or Tread: How To spell?

The word Trad is misspelled against Tread, a noun meaning "A bruise or abrasion produced on the foot or ankle of a horse that interferes. See Interfere, 3."

Tread has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets tr & d is misspelled as 'A'
Wrong Spelling:  tr-a-d 
Correct Spelling:  tr-ea-d 
Browse incorrect spellings of Tread to spell it good.

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