Arlette \a-rlette, ar-lette\ as a girl's name is pronounced ar-LET. Ancient name of uncertain origin. Probably of Norman French origin, a diminutive based on German "arn" meaning "eagle". Also possibly French feminine form of Charles. Name of the mistress of Duke Robert of Normandy in the 11th century; their son was William the Conqueror.
For more information, see also the related name Arlene.