1) Construction terminology 
In the construction industry, moling is a trenchless method used to lay pipes. During the moling process, a pneumatically-driven machine known as a mole forces its way through the soil along the desired path of the pipe. Moling avoids the need to dig a trench and can be used to lay water pipes and the heating coils of heat pump systems. Recently m...
• (p. pr. & vb. n.) of Mole
A pneumatically-driven device inserted into the ground to create holes for construction elements such as pipes and heat pump systems.