Modifies a noun

• howitzer: M109 155mm Self-propelled howitzer An American self-propelled howitzer with a fully armored turret.

• mower: With a cutting width of 56cm, the Harrier 56 is a powerful self-propelled mower that makes tackling the larger lawn a pleasure.

• gun: In early morning of 14 Aug two self-propelled guns joined the Germans.

• wheelchair: Self-propelled wheelchairs for those who are able to propel themselves using the hand rims attached to the large rear wheels.

• vehicle: In 1896 the car was entered in a race for self-propelled road vehicles, from the Crystal Palace, London, to Birmingham.

• machine: The key advantage of this type of self-propelled, tracked machine is that it can travel through narrow gaps and across rough surfaces.