from The Century Dictionary and Cyclopedia
- n. An acrid oil obtained by pressure from the flower-heads of the hop, Humulus Lupulus.
Sorry, no etymologies found.
On the other hand, we can allow hop-oil to stand for days without its odor being perceptibly changed; it appears to me more than probable that the peculiar smell of old hops is due far more to the oxidation of the bitter substance than to the oxidation of oil.
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