cockleshell [
'kɑkl.`ʃɛl]
n. 鸟蛤壳, 轻舟
cockleshell[ noun ]
a small light flimsy boat
<noun.artifact>
Cockleshell \Coc"kle*shell`\, n.
1. One of the shells or valves of a cockle.
2. A light boat.
To board the cockleshell in those plunding waters.
--W. Black.