The crossword solutions for the term 'POT PIE VEGGIE' are PEA, which is a three-letter word. Peas are a type of legume that are often used in pot pies and other dishes. They are a popular vegetable because they are high in protein and fiber, and they have a mild flavor that pairs well with other ingredients. Peas are also a great source of vitamins and minerals, making them a nutritious addition to any meal.