Cagmag

sb. and a. dial. or vulgar. [app. a word of dialectal origin, widely used in Lincolnshire, Yorkshire, and adjacent counties: of uncertain derivation.]

  1.  a. A tough old goose. b. Unwholesome, decayed or loathsome meat; offal.

1771.  Pennant, Tour Scotl. (1790), 11. The superannuated geese and ganders (called here cagmags) which by a long course of plucking prove uncommonly tough and dry.

1847–78.  Halliwell, s.v., There is a small inferior breed of sheep called cagmags.

1864.  Sala, in Daily Tel., 27 Sept., 5/1. In front of the nicest houses you see barrels full of kag-mag sweltering in the sun.

1876.  Mid-Yorksh. Gloss. (E. D. S.), Cagmag, sb. and adj., refuse; any worthless material. Used, also, of persons, contemptuously.

1877.  Peacock, N. W. Linc. Gloss. (E. D. S.), Cagmags, (1) old geese, (2) unwholesome meat.

1877.  Holderness Gloss. (E. D. S.), Cag-mag, refuse, chiefly used in reference to meat, (2) a loose character.

  2.  attrib. or adj. Unwholesome, decaying, refuse.

1859.  Sala, Tw. round Clock (1861), 295. The fumes of the vilest tobacco … of ancient fish, of cagmag meat. Ibid. (1864), Streets of World, in Temple Bar, Jan., 185. No kagmag wares are sold.