ramp

an inclined surface connecting two levels

North American perennial having a slender bulb and whitish flowers

a movable staircase that passengers use to board or leave an aircraft

behave violently, as if in state of a great anger

furnish with a ramp; "The ramped auditorium"

be rampant; "the lion is rampant in this heraldic depiction"

creep up -- used especially of plants; "The roses ramped over the wall"

stand with arms or forelegs raised, as if menacing