A noncitizen is an individual who is not a citizen or legal resident of a particular country. This term often refers to someone who is residing in a country but is not a citizen of that country. In the context of the clue "alien," it is used to describe someone from a foreign country or someone who is not a citizen of the country they are currently in.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Alien. Explanations are generated by AI and may be inaccurate.