3. Wrinkles [rɪŋklz] [n plural] - lines in the skin that people get when they get older.
Another definition: a liner or small fold in your skin, especially on your face, that forms as you get older.
Example:
His hair was almost white, and there were wrinkles around his eyes and mouth.
Every hair and wrinkle of him is big, as though I was looking at him with one of those microscopes.