Pipeline/ˈpaɪplaɪn/ Definition 1 of 3Pro Tip 1/3Physical Infrastructure Refers to a network of physically connected tubes for transporting mainly liquids and gases. The pipeline suffered damage after the earthquake. Pro Tip 2/3Geographic Scope Suggests significant length, often crossing regional or national boundaries. The transcontinental pipeline connects multiple countries. Pro Tip 3/3Industrial Connotation Commonly associated with heavy industry and large-scale infrastructure projects. Environmentalists expressed concerns about the new pipeline project.