Tothshell or Toothshell: How To spell?

The word Tothshell is misspelled against Toothshell, a noun meaning "Any species of Dentalium and allied genera having a tooth-shaped shell. See Dentalium."

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

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