offal -
That which is thrown away as worthless or unfit for use; refuse; rubbish.
Wikipedia
Offal is a culinary term used to refer to the entrails and internal organs of a butchered animal. The word does not refer to a particular list of organs, but includes most internal organs other than muscles or bones. Note that as an English collective noun, the term "offal" is used in the same form for singular and plural — without a final "s.
OmegaWiki Dictionary
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offal The rejected or waste parts of a butchered animal.
offal The internal organs of an animal other than a bird, these organs being used as food.
