Pina or Pinna: How To spell?

The word Pina is misspelled against Pinna, a noun meaning "A leaflet of a pinnate leaf. See Illust. of Bipinnate leaf, under Bipinnate."

Pinna has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings pi & a which should not be misspelled with single 'N'
Wrong Spelling: pi-n-a
Correct Spelling: pi-nn-a
Find more wrongly spelled words of Pinna to spell it well.