1. the domain or territory ruled by an earl
2. the rank, title, or dignity of an earl

Examples

• He inherited the earldom from his father.
• The earldom of Pembroke was one of the most powerful in medieval Wales.
• She was granted an earldom in recognition of her service to the crown.
• The earldom passed to his younger brother after his death.
• Many earldoms were created during the reign of King Henry VIII.
• The earldom encompassed several counties and thousands of subjects.