The term MEAT SOURCE can be broken down into two crossword solutions: DELI (4 letters) and STEER (5 letters). DELI is a type of store that sells prepared food, such as sandwiches, salads, and other cold cuts. It is derived from the German word 'delikatessen, ' which means 'DELICACIES.' STEER is a male bovine animal, typically raised for its meat. It is also known as a bullock or ox in some parts of the world. Both DELI and STEER are sources of meat, hence the term MEAT SOURCE.