Definitions of chuck:

• noun:   a holding device consisting of adjustable jaws that center a workpiece in a lathe or center a tool in a drill
• noun:   the part of a forequarter from the neck to the ribs and including the shoulder blade
• noun:   informal terms for a meal
• verb:   throw away

  Example: "Chuck these old notes"

• verb:   pat or squeeze fondly or playfully, especially under the chin
• verb:   throw carelessly

  Example: "Chuck the ball"

• verb:   eject the contents of the stomach through the mouth
• name:  A male given name (rare: 1 in 6250 males; popularity rank in the U.S.: #547)
• name:  A surname (very rare: popularity rank in the U.S.: #26719)