Longman Dictionary of Contemporary English homepage

Date: 1400-1500
Language: Latin
Origin: 'otherwise'

alias

1 preposition
     
a‧li‧as1
used when giving someone's real name, especially an actor's or a criminal's name, together with another name they use:
'Friends' star Jennifer Aniston, alias Rachel Green
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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