A tube for transporting coal-oil.
1860. The first suggestion of a pipe-line for transporting oil was made by Gen. S. D. Karns in Nov. 1860.U.S. Tenth Census, p. 93.
1883. When the tank at a well is nearly full, notice is sent to the nearest agency of the Pipe Line.E. V. Smalley, Striking Oil, Century Mag., xxvi. 332/2 (July). (N.E.D.)