alias >> /ˈeɪliəs/
Definition: [adverb] Used to indicate that a named person is also known or more familiar under another specified name.
Example: Eric Blair, alias George Orwell
Definition: [transitive verb] Misidentify (a signal frequency), introducing distortion or error.
Example: fringes at higher spatial frequency are aliased by the sensor
Definition: [noun] A false or assumed identity.
Example: a spy operating under the alias Barsad