scrunch
verb
[ skrʌn(t)ʃ ]
• make a loud crunching noise.
• "crisp yellow leaves scrunched satisfyingly underfoot"
scrunch
noun
• a loud crunching noise.
• "Charlotte heard the scrunch of boots on gravel"
Origin:
late 18th century (in the sense ‘eat or bite noisily’): probably imitative; compare with crunch.