Answer: crunching

AnswerCrossword Clue
crunchingCrush (a hard or brittle foodstuff) with the teeth, making a loud but muffled grinding sound
crunchingMake such a sound, esp. when walking or driving over gravel or an icy surface
crunchingthe act of crunching
crunchingProcess large amounts of information or perform operations of great complexity, esp. by computer
crunchingStrike or crush noisily