Definitions of tip:

• noun:   an indication of potential opportunity

  Example: "He got a tip on the stock market"

• noun:   the extreme end of something; especially something pointed
• noun:   a relatively small amount of money given for services rendered (as by a waiter)
• noun:   a V shape
• noun:   the top point of a mountain or hill
• verb:   cause to tilt

  Example: "Tip the screen upward"

• verb:   give a tip or gratuity to in return for a service, beyond the agreed-on compensation

  Example: "Remember to tip the waiter"

• verb:   mark with a tip

  Example: "Tip the arrow with the small stone"

• verb:   remove the tip from

  Example: "Tip artichokes"

• verb:   give insider information or advise to

  Example: "He tipped off the police about the terrorist plot"

• verb:   strike lightly
• verb:   walk on one's toes
• verb:   to incline or bend from a vertical position
• verb:   cause to topple or tumble by pushing