'Cod-liver oil' definitions:

Definition of 'cod-liver oil'

(from WordNet)
noun
An oil obtained from the livers of cod and similar fishes; taken orally as a source of vitamins A and D [syn: cod- liver oil, cod liver oil]

Definition of 'Cod-liver oil'

From: GCIDE
  • Cod liver \Cod" liv`er\, n. The liver of the common cod and allied species. [1913 Webster]
  • Cod-liver oil, an oil obtained from the liver of the codfish, and used extensively in medicine as a means of supplying the body with fat in cases of malnutrition. [1913 Webster]