hacking

Unauthorized attempts to bypass the security mechanisms of an information system or network.

Playful solving of technical work that requires deep understanding, especially of a computer system.

A dry coughing; the emission of a succession of short coughs.

(UK) A riding or journey on horseback.

The act of striking the muscles with the side of the hand.

A kick in the shins.

(no longer used) The operation of working over the faces of rough or worn grindstones with a hack-hammer.

(no longer used) The separation of a course of stones into two smaller courses, when there are not enough large stones to form a single course.

(no longer used) The piling of bricks for drying.

(no longer used) The cuts and grooves made in the metal laps by holding the cutting edge of a steel blade against them while in motion, for the purpose of providing receptacles or pockets for the powders using in cutting and polishing gems.

Short and interrupted, broken, jerky; hacky.