Definitions of toss:

• noun:   an abrupt movement

  Example: "A toss of his head"

• noun:   (sports) the act of throwing the ball to another member of your team
• noun:   the act of flipping a coin
• verb:   agitate

  Example: "Toss the salad"

• verb:   throw or toss with a light motion

  Example: "Toss me newspaper"

• verb:   throw carelessly
• verb:   lightly throw to see which side comes up
• verb:   throw or cast away
• verb:   move or stir about violently