Monsail or Moonsail: How To spell?

The word Monsail is misspelled against Moonsail, a noun meaning "A sail sometimes carried in light winds, above a skysail."

Moonsail has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings m & nsail which should not be misspelled with single 'O'
Wrong Spelling:  m-o-nsail 
Correct Spelling:  m-oo-nsail 
Find more incorrect spellings of Moonsail to spell right way.

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