(chemistry, dated) Sulphuric acid.

A factory in which vegetable oil is extracted from seeds or beans by milling

(poker slang) A lowball hand with a seven and a six as the two highest cards / (poker slang) A seven and a six as starting cards in Texas hold 'em

plural of oil burner

Any of various oils and fats extracted from the blubber of whales and used in the manufacture of soap and lubricants (formerly as an illuminating oil).

A fragile spore produced by some fungi. / The fungus Erysiphe necator (= Uncinula necator), which produces powdery mildew in grapes.

plural of oikos

Seppuku of a retainer at the time of his master's death.

A simple vessel used to produce light continuously for a period of time from a liquid fuel source.

Alternative form of castor oil