The term 'Dairy Delivery' refers to the delivery of dairy products such as milk, cheese, and eggs. The crossword solutions for this term are MOOING (6 letters), HEIFER (6 letters), EGGS (4 letters), and EGGCRATE (8 letters). MOOING is the sound made by cows, which are a major source of dairy products. Heifers are young female cows that have not yet given birth. Eggs are a common dairy product, and an egg crate is a container used to transport eggs.