The laying of pipes or a pipeline.

One who works on oil pipelines.

One who plays uilleann pipes.

One who lays conducting pipes in the ground, for water, gas, etc. / (US, politics, slang, dated) A politician who works in secret.

plural of pipelayer

simple past tense and past participle of pipeclay

present participle of pipeclay

(chemistry) A glass apparatus used in the absorption of gases.

Capable of being conveyed through a pipe.

A nonsteroidal anti-inflammatory drug.