A ramp is a structure that moves things or people from one level to another. Ramps are commonly found in buildings, on highways, and for public facilities in which people move up and down.
A mechanic might use ramps to lift a car off the ground.
When you drive to the downtown of a city, you park your car in a parking ramp.
A person in a wheelchair can’t use a stairway, so he or she goes up a ramp in order to enter a building.
To enter or exit a highway, use an on-ramp or an off-ramp.
A ramp is used when boarding an airplane.
People who like to skateboard do tricks on ramps.
The word "ramp" can also be used as part of a verb phrase: ramp up. To ramp up something is to increase it.
Our company is ramping up production.
They need to ramp up their hiring of new employees in time for the holidays.
The military ramped up its readiness in anticipation of an attack.