'Cockleshell' definitions:

Definition of 'cockleshell'

(from WordNet)
noun
A small light flimsy boat

Definition of 'Cockleshell'

From: GCIDE
  • Cockleshell \Coc"kle*shell`\, n.
  • 1. One of the shells or valves of a cockle. [1913 Webster]
  • 2. A light boat. [1913 Webster]
  • To board the cockleshell in those plunding waters. --W. Black. [1913 Webster]