Definitions:
a sloping surface joining two different levels, as at the entrance or between floors of a building

an upward bend in a stair rail.

an electrical waveform in which the voltage increases or decreases linearly with time

a swindle, especially one involving a fraudulent increase of the price of a share

provide with a ramp

drive up the price of (a company's shares) in order to gain a financial advantage

(of an animal) rear up on its hind legs in a threatening posture

(of an electrical waveform) increase or decrease voltage linearly with time