Definitions of lull:

• noun:   a period of calm weather

  Example: "There was a lull in the storm"

• noun:   a pause during which things are calm or activities are diminished
• verb:   become quiet or less intensive

  Example: "The fighting lulled for a moment"

• verb:   calm by deception

  Example: "Don't let yourself be lulled into a false state of security"

• verb:   make calm or still
• name:  A surname (very rare: popularity rank in the U.S.: #30045)