Cusson or Caisson: How To spell?

The word Cusson is misspelled against Caisson, a noun meaning "A chest filled with explosive materials, to be laid in the way of an enemy and exploded on his approach."

Word contains consecutive vowels 'AI' in between alphabets c & sson is misspelled as 'U'
Wrong Spelling: c-u-sson
Correct Spelling: c-ai-sson
Check more misspelled words of Caisson to spell it correct.