I. ri-ˈtā-nər noun
Date: 1540
1.
a. : a person attached or owing service to a household ; especially : servant
b. : employee
2. : one that retains
3. : a device or structure that holds something in place: as
a. : the part of a dental replacement (as a bridge) by which it is made fast to adjacent natural teeth
b. : a dental appliance used to hold teeth in correct position especially following orthodontic treatment
II. noun
Etymology: Middle English reteigner, literally, retention, from Anglo-French, from reteigner, verb
Date: 1775
1. : the act of a client by which the services of a lawyer, counselor, or adviser are engaged
2. : a fee paid to a lawyer or professional adviser for advice or services or for a claim on services when needed