A shortcut.
A crosswise cut.
A crosscut saw.
A level driven across the course of a vein, or across the main workings, as from one gangway to another.
An instance of filmic crosscutting.
To cut (wood, lumber) across the grain.
To cut across something.
To cut repeatedly between two concurrent scenes.
A key, or more usually a combination of keys, on the keyboard of a personal computer that activates a specific, predefined function.