Wiry refers to something that is slim, sturdy, and resilient, often with a strong and lean appearance. It is typically used to describe a person or animal's physical build, emphasizing their strength and agility. In this context, sinewy means having well-developed and prominent muscles, particularly showing the strength and flexibility of tendons and ligaments.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Like the coats of many terriers. Explanations are generated by AI and may be inaccurate.