1) a device, with booms and a bucket, for elevating a worker to the proximity of a tree’s crown; may be mounted on a truck or other vehicle or be towed or self-propelled (also known as a mini-lift).
2) a self-propelled device such as a scissor lift, with an elevating platform but without side reach for placing a worker in the proximity of a tree’s crown; may be used for hedges or interior trees. In the United Kingdom, such devices are called a mobile elevated work platform (MEWP).