Pipelayer

Part of speech: noun

Definitions

1. An entity, whether human or mechanical, tasked with the installation of underground piping systems for utilities like water or gas
2. A worker or apparatus involved in the procedure of setting up pipelines that facilitate the distribution of essential resources
3. A professional or device engaged in the construction of subsurface piping networks used for the delivery of services such as water and gas

Etymology: "Pipelayer" is a plain compound: "pipe" joined to "layer," the agent noun from "lay," meaning one who lays something down. The word describes a worker, or increasingly a machine, whose job is to lay pipe in the ground for water, gas, sewage, or other utilities. The sense of "lay" here is the older one of setting something flat or in position, the same sense found in "layer of bricks" or "lay a foundation," rather than the sense of "lie" that often confuses learners. The word is transparent, so the most useful thing to note is how the compound works. "Pipe" in the sense of a tube for conveying fluid has long been part of English, and the "-layer" element follows the pattern of earlier trade names such as "bricklayer" and "hedgelayer." Pipelaying as an occupation grew with urban water and gas networks in the nineteenth and twentieth centuries, and the term grew alongside them.