Fidlestring or Fiddlestring: How To spell?
The word Fidlestring is misspelled against Fiddlestring, a noun meaning "One of the catgut strings of a fiddle."
Fiddlestring has double "dd" is mispronounced as "d"Remember double 'DD' in between the strings Fi & lestring which should not be misspelled with single 'D'
Wrong Spelling:  Fi-d-lestring  Correct Spelling:  Fi-dd-lestring 
Find more wrongly spelled words of Fiddlestring to spell it well.