crunch

A noisy crackling sound; the sound usually associated with crunching.

A critical moment or event.

A problem that leads to a crisis.

(exercise) A form of abdominal exercise, based on a sit-up but in which the lower back remains in contact with the floor.

The overtime work required to catch up and finish a project, usually in the final weeks of development before release.

A dessert consisting of a crunchy topping with fruit underneath.

(generally in the plural) A small piece created by crushing; a piece of material with a friable or crunchy texture.