noun
gantry
GAN-tree/ˈɡæntri/
A framework built over or around a space to support equipment or provide access.
The gantry supports the overhead trolley and its suspended load.

Etymology
Probably connected with Latin cantherius, ‘rafter, frame,’ gantry first meant a four-footed barrel stand. That supporting-frame sense broadened to structures carrying cranes and other equipment.
In context
this is the little gantry that's moved around by the big gantry the paint gun mounts here and it has its trigger pulled with this little servo motor so the gantry rides in these steel tracks
More examples
- The workers crossed the maintenance gantry.
- The rocket stood inside a tall service gantry.
- The scanner’s gantry surrounded the examination table.
Forms
gantry · gantries
Similar words
- scaffold
- A scaffold supports workers or construction; a gantry spans a space to support equipment or provide access.
- crane
- A crane lifts loads; a gantry can be the supporting frame for one.