from The American Heritage® Dictionary of the English Language, 4th Edition

  • The lungs, especially the lungs of an animal slaughtered for food.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of light.
  • n. A butcher's term for the lungs of an animal (being lighter than adjacent parts).
  • v. Third-person singular simple present indicative form of light.

from the GNU version of the Collaborative International Dictionary of English

  • The lungs of an animal or bird; -- sometimes coarsely applied to the lungs of a human being.


Middle English lightes, from light, light in weight (from the lightness of the lungs compared to other organs); see light2.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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