Definitions

1. verb

to surrender or transfer one’s rights or authority to another person or agency, especially in a legal matter

“The company decided to attorn to the new management team.”

2. verb

to acknowledge or concede something, especially in a formal or official capacity

“The plaintiff attorned to the defendant’s offer to settle the lawsuit.”

3. verb

to change one’s allegiance or loyalty to someone or something else

“The politician attorned to the new party leadership.”