Seed cases are the protective outer covering of a seed, which can come in a variety of shapes and sizes. The crossword solutions for the term SEED CASES are PODS (4 letters), ARILS (5 letters), and BURS (4 letters). Pods are dry, dehiscent fruits that split open to release their seeds, while arils are fleshy structures that surround the seed of some plants. Burs are spiny, hard-coated fruits that contain one or more seeds.