pipe·line (ppln)n.1. A conduit of p

pipe·line (ppln)
n.
1. A conduit of pipe, especially one used for the conveyance of water, gas, or petroleum products.

2. A direct channel by which information is privately transmitted.

3. A system through which something is conducted, especially as a means of supply: "Farther down the pipeline are three other approaches to vaccine development" (Boston Globe).

tr.v.pipe·lined, pipe·lin·ing, pipe·lines
1. To convey by or as if by a system of pipes.

2. To lay a system of pipes through.