What is the meaning of ramp?

noun

• An inclined surface connecting two levels.
  • synonyms: incline
• North American perennial having a slender bulb and whitish flowers.
  • synonyms: wild leek, Allium tricoccum
• A movable staircase that passengers use to board or leave an aircraft.

verb

• Behave violently, as if in state of a great anger.
  • synonyms: rage, storm
• Furnish with a ramp.
  • usage: "The ramped auditorium"
• Be rampant.
  • usage: "the lion is rampant in this heraldic depiction"
• Creep up - used especially of plants.
  • usage: "The roses ramped over the wall"
• Stand with arms or forelegs raised, as if menacing. .