conch
noun /kɒntʃ/
  /kɑːntʃ/
- the shell of a sea creature that is also called a conchOxford Collocations DictionaryConch is used before these nouns:- shell
 Word Originlate Middle English: from Latin concha ‘shellfish, shell’, from Greek konkhē ‘mussel, cockle, or shell-like cavity’.