Definitions of clout:

• noun:   a target used in archery
• noun:   (boxing) a blow with the fist

  Example: "I gave him a clout on his nose"

• noun:   a short nail with a flat head; used to attach sheet metal to wood
• noun:   special advantage or influence
• verb:   strike hard, especially with the fist

  Example: "He clouted his attacker"