from The Century Dictionary.
- In geology, a set of cross-striæ which are produced on the lee sides of older striæ.
Sorry, no etymologies found.
In the noise and blowing sand from the departing vehicles, he shouted, "I don't know if those are drag-lines or scoops."
Along with the trucks, drag-lines, upgraders and so forth, all that combustion means that the tarsands emit almost as much greenhouse gas as the entire nation of Denmark, and are projected to produce more greenhouse gases than all the world's volcanoes by 2020.
Silks range from the elastic, sticky strands for entrapment to the non-adhesive drag-lines and frame threads, to the silk for wrapping prey, making the egg sac, etc.