beefer

beef +‎ -er

• Rhymes: -iːfə(ɹ)

beefer (plural beefers)

1. (slang) A police informer.
2. A cow used for beef and not milk.
   • 1916, Royal Association of British Dairy Farmers, Journal (volume 30-32, page 89)

     We usually reckon if a cow does not respond to good food at the pail, that she is "putting it on her back"; that is, she fattens, and is thus more of a beefer than a milker, and should not be retained for milking purpose.

• (police informer): See Thesaurus:informant

• befree