Breasthaught or Breastheight: How To spell?

The word Breasthaught is misspelled against Breastheight, a noun meaning "The interior slope of a fortification, against which the garrison lean in firing."

Word contains consecutive vowels 'EI' in between alphabets breasth & ght is misspelled as 'AU'
Wrong Spelling:  breasth-au-ght 
Correct Spelling:  breasth-ei-ght 
Check more misspelled words of Breastheight to spell it correct.