Example: "He opened the window a crack"
Example: "There was a crack in the mirror"
Example: "An ace reporter"
Example: "The glass cracked when it was heated"
Example: "His gun cracked"
Example: "The teacher cracked him across the face with a ruler"
Example: "Registrations cracked through the 30,000 mark in the county"
Example: "The glass cracked"
Example: "The pipe snapped"
Example: "She cracked my password"
Example: "Crack a joke"
Example: "Heat and light cracked the back of the leather chair"
Example: "The petroleum cracked"