"Eyed up" is a colloquial phrase that means to visually assess or observe something or someone carefully. It suggests paying close attention to the appearance or details of what is being observed. For example, if someone says they "eyed up" a new car, it means they carefully examined its features and appearance.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Gave a once-over. Explanations are generated by AI and may be inaccurate.