From WordNet (r) 3.0 (2006):
ramp
n 1: an inclined surface connecting two levels [syn: ramp,
incline]
2: North American perennial having a slender bulb and whitish
flowers [syn: ramp, wild leek, Allium tricoccum]
3: a movable staircase that passengers use to board or leave an
aircraft
v 1: behave violently, as if in state of a great anger [syn:
ramp, rage, storm]
2: furnish with a ramp; "The ramped auditorium"
3: be rampant; "the lion is rampant in this heraldic depiction"
4: creep up -- used especially of plants; "The roses ramped over
the wall"
5: stand with arms or forelegs raised, as if menacing