Related Clues:

• Senior
• From furthest back
• Tribal leaders, maybe
• Meg, among the 'little women'
• 'The ___ trick in the book!'
• First in time
• Firstborn
• At the highest development
• Primogeniture beneficiary
• Readiest for picking
• Guinness adjective
• First-born
• Inheritor under primogeniture
• Heir to the throne
• Heir, often