If stones, gravel, or dry leaves scrunch as you walk on them, they make a sharp, crushing noise under your feet — a dry, messy sound, not a clean tap. The ground scrunches; you can also say you scrunch over the path. It is a sound-word, informal, and very ordinary in stories and everyday talk. People use the same word in other close ways: you scrunch up a piece of paper (crush it into a ball), you scrunch your eyes or your nose (squeeze the face up), and hair can be scrunched (crushed in the hands while it dries). Those are the same family of 'crush and make a noise / make small'. The walking-on-stones sense is the one you hear with leaves on an autumn path or pebbles on a beach. It is stronger and cracklier than a soft crunch, though the two sit next to each other.

（走在石頭、枯葉上）踩得喀吱喀吱響；同一個字也可指揉皺、皺起臉