cock·le·shell 
(kŏkəl-shĕl′)
(kŏkəl-shĕl′)n.
1.
a. The shell of a cockle.
b. A shell similar to that of a cockle.
2. Nautical A small light boat.
- primiparous
- primitive
- primitively
- primitiveness
- primitivism
- primitivist
- primitivistic
- primitivity
- primly
- primness
- primo
- Primo de Rivera y Orbaneja
- primogenital
- primogenitary
- primogenitor
- primogeniture
- primordial
- primordially
- primordial soup
- primordium
- primp
- primrose
- primrose path
- primula
- primum mobile