A line on the surface of something along which it has split without breaking into separate parts. A sudden sharp or explosive noise. A joke, typically a critical or unkind one. An attempt to gain or achieve something. A hard, crystalline form of cocaine broken into small pieces and smoked. Break or cause to break without a complete separation of the parts. Make or cause to make a sudden sharp or explosive sound. Find a solution to; decipher or interpret. Tell (a joke). Decompose (hydrocarbons) by heat and pressure with or without a catalyst to produce lighter hydrocarbons, especially in oil refining. Very good, especially at a specified activity or in a specified role.