Regle or Reigle: How To spell?

The word Regle is misspelled against Reigle, a noun meaning "A hollow cut or channel for quiding anything; as, the reigle of a side post for a flood gate."

Word contains consecutive vowels 'EI' in between alphabets r & gle is misspelled as 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  r-e-gle 
Correct Spelling:  r-ei-gle 
Explore spell check of Reigle to spell without errors.