Definitions of chisel:

• noun:   an edge tool with a flat steel blade with a cutting edge
• verb:   carve with a chisel

  Example: "Chisel the marble"

• verb:   engage in deceitful behavior; practice trickery or fraud

  Example: "Who's chiseling on the side?"

• verb:   deprive somebody of something by deceit

  Example: "They chiseled me out of my money"