Cirus or Cirrus: How To spell?
The word Cirus is misspelled against Cirrus, a noun meaning "A soft tactile appendage of the mantle of many Mollusca, and of the parapodia of Annelida. Those near the head of annelids are Tentacular cirri; those of the last segment are caudal cirri."
Cirrus has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings ci & us which should not be misspelled with single 'R'
Wrong Spelling:  ci-r-us  Correct Spelling:  ci-rr-us 
Check more misspelled words of Cirrus to spell it correct.