Related Clues:

• Up to speed, ultimately, in school
• Long seed case
• Place for inner peas
• Milkweed feature
• Okra portion
• Seed-case
• Pea shell
• A pack of peas
• School's self-contained compartment
• Prince of Denmark opens case
• Home for 24-Down
• Peas' container
• There's a pea in it
• Cast lead-in
• Holder of peas