A conduit made of pipes used to convey water, gas or petroleum etc.
A channel (either physical or logical) by which information is transmitted sequentially (that is, the first information in is the first information out).
A system or process through which something is conducted.
The inside of a wave that a surfer is riding, when the wave has started closing over it.
To design (a microchip etc.) so that processing takes place in efficient stages, the output of each stage being fed as input to the next.
To convey something by a system of pipes
To lay a system of pipes through something