Definitions of bead:

• noun:   a small ball with a hole through the middle
• noun:   a beaded molding for edging or decorating furniture
• noun:   a shape that is small and round

  Example: "Beads of sweat on his forehead"

• verb:   form into beads, as of water or sweat, for example
• verb:   string together like beads
• verb:   decorate by sewing beads onto

  Example: "Bead the wedding gown"