subs. phr. (nautical).—A sailor: also OLD SHELL.

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  1883.  Graphic, 12 May, 487, 3. The marine was described as a joey, a jolly, a SHELLBACK.

2

  1884.  W. C. RUSSELL, Jack’s Courtship, i. It takes a sailor a long time to straighten his spine and get quit of the bold sheer that earns him the name of SHELL-BACK.

3

  1885.  J. RUNCIMAN, Skippers and SHELLBACKS [Title].

4

  1901.  W. S. WALKER, In the Blood, 29. All excepting the captain, who was a regular quiet old SHELL-BACK.

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  1902.  Athenæum, 8 Feb., 176, 3. Any one of a dozen gaunt and hungry SHELL-BACKS in the forecastle would have supported him.

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