Definitions for "Dragline"
a large machine used in the surface mining process to remove overburden, or layers of earth and rock, covering a coal seam
A mining machine which drops a heavy toothed bucket on a cable from the end of a boom into the oil sand, then drags the bucket through the deposit, scooping up the sand. Once full, the bucket is raised and emptied into a windrow.
A type of excavator which has a bucket attached by wire to a long light boom or jib. The bucket excavates material by being dragged along the surface towards the machine, before being lifted into the air and loaded. Draglines usually dig below the level on which they stand.
a very long strand of silk that allows spiders to hang in the air
silk line released while walking and climbing, fastened to substrate at regular intervals as a safety line or to retrace a path