"Whale oil is oil obtained from the blubber of whales. Whale oil from the bowhead whale was sometimes known as train oil, which comes from the ...
[Read more]
Dutch word traan ("tear" or "drop").
Sperm oil, a special kind of oil obtained from the head cavities of sperm whales, differs chemically from ordinary whale oil: it is composed mostly of liquid wax. Its properties and applications differ from those of regular whale oil, and is sold for a higher price." - (en.wikipedia.org 30.06.2021)