Crunching

To crush something, especially food, with a noisy crackling sound.

"When I came home, Susan was watching TV with her feet up on the couch, crunching a piece of celery."

To be crushed with a noisy crackling sound.

"Beetles crunched beneath the men's heavy boots as they worked."

To calculate or otherwise process (e.g. to crunch numbers: to perform mathematical calculations). Presumably from the sound made by mechanical calculators.

"That metadata makes it much easier for the search engine to crunch the data for queries."

To grind or press with violence and noise.

A crunch noise.