Definitions of damp:

• noun:   a slight wetness
• verb:   restrain or discourage

  Example: "The sudden bad news damped the joyous atmosphere"

• verb:   lessen in force or effect
• verb:   make vague or obscure or make (an image) less visible
• verb:   deaden (a sound or noise), especially by wrapping
• adjective:   slightly wet

  Example: "Clothes damp with perspiration"