piped

verb

1. (form-of, participle, past)simple past and past participle of pipe

adj

1. (not-comparable)Shaped like a pipe; tubular.
2. (not-comparable)Conveyed by a pipe.

   “All other piped services for the locomotives are provided in the shed; two types of lubricating oil, a waste-oil pipeline, compressed air, radiator-coolant water and both hard- and soft-water pipelines.”

3. (not-comparable)Of a rail vehicle, having a through brake pipe, without the vehicle having brakes operating from it.

   “Vacuum-fitted wagons are provided with complete vacuum-brake equipment; "piped" wagons have through pipes, enabling them to be marshalled in vacuum-braked trains without interrupting the continuity of the vacuum brake connections, but are not provided themselves with vacuum brake gear.”