chicken feed vs cold cash

chicken feed

noun
  • A very small or insignificant quantity, especially of money. 

  • Food (usually grain) given to poultry. 

cold cash

noun
  • Money, especially in the form of paper currency or coins, which is in hand or readily available for use. 

How often have the words chicken feed and cold cash occurred in a corpus of books? (source: Google Ngram Viewer )