Crosbones or Crossbones: How To spell?
The word Crosbones is misspelled against Crossbones, a noun meaning "A representation of two of the leg bones or arm bones of a skeleton, laid crosswise, often surmounted with a skull, and serving as a symbol of death."
Crossbones has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings cro & bones which should not be misspelled with single 'S'
Wrong Spelling:  cro-s-bones  Correct Spelling:  cro-ss-bones 
Find more incorrect spellings of Crossbones to spell right way.