subs. (popular).—Primarily, a red herring; but applied to other kinds of fish, herrings now receiving the distinctive cognomen of YARMOUTH CAPONS. The usage is a very old one, and it is notable that GLASGOW MAGISTRATE, another name for a red herring, was formerly GLASGOW CAPON.

1

  c. 1640.  J. SMYTH, Hundred of Berkeley (1885), 319. The Sole wee call our Seaverne CAPON.  [M.]

2

  c. 1696.  B. E., A New Dictionary of the Canting Crew. YARMOUTH CAPON, a Red Herring.

3

  1719.  RAMSAY, Epistle to Lieutenant Hamilton, II., iii.

        A GLASGOW CAPON and a fadge
            Ye thought a feast.  [M.]

4

  1812.  W. TENNANT, Anster Fair, iv.

                  Each to his jaws
A good Crail’s CAPON holds.
    [note ‘a dried haddock.’]  [M.]

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