"Pneumatic tubes" refer to a system of tubes that use air pressure to transport small objects, such as documents or canisters, from one place to another quickly and efficiently. Full definition
These medication orders are available to the pharmacy via pneumatic tube system, fax machine, or even electronically. (jobdescriptionandresumeexamples.com)
The idea of pneumatic tube transport (or capsule pipeline) was invented in 1806 by Phineas Balk, but was only seen as a spectacular invention until the actual capsule was invented in 1836. (bookbrowse.com)
The compressed air was run throughout the workshop using pneumatic tubing, and it was created using a natural gas tank attached to a generator, which was used to power an air compressor. (slaw.ca)